Linebreak because this post is way too long already, sorry guys
What was said by the writers
Honestly I don't hate myself enough to push through several Jim Starlin interviews, so here are just a couple quick examples.
"Robin died for a number of reasons. He didn't listen to Batman when Batman told him to wait." Here, in this list, we see the responsibility for Jason's death being partially attributed to Jason. You might argue that what is listed here is an objective truth, and it is, but it's said as a justification for the writers to skirt responsibility because Jenna is upset with them for killing Jason (which one of the societal purposes of victim-blaming btw). Listing the chain of events that led to the death in the story is off-topic here- this person is highlighting them specifically so that the blame is pushed on all the fictional characters here, including Jason, and the voters, rather than dc themselves -as though they weren't the ones writing the story in the first place. Additionally, note the very punitive framework: Jason's death is a logical consequence of his disobedience. Remember to always listen to your father, Jenna. Or else you will get brutally murdered and it will be your fault.
This one I wanted to use here because it's so shameless it's impressive that they believed it would work. The chain of logic is as follows: Jason died because the public voted for his death - the public voted for his death because he was disliked- Jason was unpopular not because of any writing choice but because Jason broke through the fourth wall magically and earned himself real world agency. Jason is blamed for his own death through the intermediary of the voters (fucked up to put all that on literal kids btw) and in order to skirt responsibility on writing a child murder they weren't all too proud of, they invited Jason some kind of magical agency that made Jason seize control of the narrative from them. Honestly, I could have made that whole point without using that example, but I think it matters, it says something about this fandom that we can look at something so ridiculously, egregiously exaggerate, and still be able to say "victim blaming, what victim blaming? I don't see it." The elephant! In the middle of the room! It's right there!!!
What the fandom is saying
To clarify, I'm talking about the comics, dc themselves and the fandom even though the rest of the post discusses only the comics because OP said "that's not what happens in and out of canon" and I want to disprove it completely. There is victim-blaming rhetoric happening inside of fandom, and it's important that we are able to identify it amongst ourselves.
Now. Honestly this is a little malicious. I could have gone with a compilation of screenshots earned by painstakingly getting through the anti jason todd tag or asking some of my friends to provide me screenshots. But this is one of my favourite fallacies, so I kind of can't resist.
Do you know what an autophagic argument is? It's an argument that eats itself, in the sense that it disproves himself. Sort of like saying "Jason isn't victim-blamed in the fandom" while victim-blaming Jason in a fandom post.
"Jason did do something stupid and reckless, and the joker took advantage of that and killed him".
To be clear, this isn't me attacking OP's rhetorical skills by saying they made such a basic mistake. From OP's perspective, this isn't an autophagic argument, because they don't see what they're saying here as victim-blaming for interesting reasons we'll get to later. But here, they are making up a reckless and stupid behaviour to serve as a cause (which as stated isn't what happens in this story) and use that to attribute partial responsibility (and as you'll remember, blame shift only needs to be partial to fit the above-mentioned definitions) to Jason in the causality leading to their death.
Victim-blaming doesn't necessarily absolve the culprit of the crime- instead, when it's partial like here, it dilutes the amount of attributed responsibility to the culprits. Here, as you'll notice, the phrasing of the link between Jason's mysterious actions and his murder doesn't erase Joker's responsibility, but it erases Sheila's. It's the weight of Sheila's lie and manipulation that is attributed on Jason by erasing her agency and replacing it with Jason's vague "stupid reckless action". It's victim-blaming. In fandom. Ergo, there is in fact victim-blaming about Jason's murder in fandom.
Honestly, the beauty of autophagic arguments is that they save you a lot of work in your objections. I don't have to do the work of compiling all the annoying posts I have seen, because I just have to point out the contradiction and it takes away the whole credibility of the argument. So I'm genuinely thankful, because that saves me a lot of work.
Two more things I find noteworthy to mention:
-blaming Jason's death of recklessness is not only untrue, it omits that the recklessness evoked earlier in the story (that again, does not end up playing a role in his death) is born from mental health struggles and potential suicidality. Why is that systematically erased when people talk about Jason's recklessness as a cause of death? Probably because people know that blaming a suicidal teenager for his death is a bad look. Even when a kid kills themselves without using anyone as a proxy, societally we tend to consider that suicide is, in most cases, a "non-choice", something people do when they see no possible alternative due to a variety of factors that made carrying on with their life impossible to them. Even if Jason had indeed died because of recklessness, blaming him for it would still be a slap in the face of suicidal people and the reality of their struggles.
-I've mentioned it before: while it's sneakier than some of dc's more blatant bigotry, the idea that Jason died because he was disobedient is sexist and in particular, very patriarchal.
Now. So far what I've done is provide examples of what I think is a good methodology for identifying victim-blaming when in doubt: find a definition to refer yourself to, focus on the content and analyse what is being said (like "jason killed himself"), in what context (like answering someone who is upset at the writers for killing him) and how is it framed (like making up motivations that didn't exist to paint his actions in a negative light), confront what the combination of these elements is saying explicitly or implicitly depending on the panels, and compare that with your definition of victim-blaming.
I don't think it's a useless contribution at all, it's an interesting challenge to try and go beyond my immediate frustration of "how do you not see that this is very obviously victim-blaming??!!", but if that was all the original post had to say, it would be a dime a dozen. The original post is interesting because OP then goes on to list arguments that are supposed to disprove the fact that these occurrences are victim-blaming in spite of the fact that they fit the definition, and I find those arguments very interesting to discuss.