Jim Into Mystery

which is a natural assumption, but in my experience that's not really the case? like in my experience the drama llamas in fandom are usually not the ones who are just genuinely very deeply into the fiction. i've known people who are basically thinking about star trek or x-men comics or supernatural pretty much 100% of their free time and ime that type of person is usually very nice and surprisingly functional in their regular life. when someone's a constant nexus of fandom drama it's usually not that they are obsessed with the actual work of fiction the fandom is about, it's at least one of the following:

what they're obsessed with is not the source material but their unhealthy parasocial relationships with one or more of the people who created it

what they're obsessed with is not the source material but some elaborate shared-universe subset of fanfic about it that's only barely related to the original at this point, and/or an esoteric reading-against-the-text reinterpretation of the source material (often if the canon is active and ongoing this leads to becoming actively hostile toward it for its inevitably increasing failure to conform to their preferred fanon)

what they're obsessed with is not the source material but the fandom itself and gathering clout within it, so that the source material basically only exists to them as a tool for scoring points in increasingly arcane fandom disputes

I've interacted with perfectly pleasant people who are off enjoying extremely OOC shipping AUs in their nice little bubble. And I've seen toxic fans who act as champions for canon compliance when making Epic Dunks intended to stir up drama on twitter.

I have also met people who clearly engage in behavior #2, who were perfectly nice and reasonable. It'd be more difficult to do #1 or #3 without becoming a problem, but it's at least theoretically possible.

I think any fan is capable of acting toxic, whether they engage in those three behaviors or not. But OP is specifically talking in terms of creating fandom drama, which is so sustained that it breaks containment to non-fandom coverage, and gives fandom a bad name. And in my experience that type of wank often goes hand-in-hand with delusions of grandeur, whether it's 1) my opinions must influence the creators, or 2) my interpretations are objectively true, or 3) my fandom needs to care what I think.

Even the toxic enforcement of canon compliance frequently boils down to a narrow-minded view of canon (#2) dictated from the authority of mods, olds, or BNFs (#3) who assume without evidence that the creators implicitly agree with them (#1).

ok the mini comics the actual lore and everthing are so cool wow i love them sm ok but filmation he man is just a cult and u can't do nothing about it but accept it and enjoy every second of it.

“Bake-Kyōryū”

Day 28: Skeletal

It’s a magical liopleurodon.

...

Is that not his uncle...or am I tripping..cause that's what I remember....

The 80s cartoon never really got too deep into Skeletor's origins, and never introduced a brother for Randor. Post-cartoon, late in the toyline, there was a minicomic about Skeletor trying to stop Randor from learning what happened to his brother Keldor, and it comes across like maybe Skeletor IS Keldor, but the story never gets around to just saying that.

As I recall, the 2002 cartoon established Skeletor was originally a man named Keldor, but never got around to revealing Keldor was Randor's brother. That was a reboot, so it's debatable whether you can use that 80s minicomic as evidence.

Years later, I think a toy pacakage bio finally connected all the dots so Skeletor is Keldor AND Keldor is Randor's brother. But that was yet another separate continuity, cherry-picking elements from the earlier stories. And the movie isn't strictly beholden to any of those stories.

So I'd say it's a 50-50 chance whether Travis Knight means to reveal Skeletor is He-Man's uncle someday, or if he thinks that's dumb and doesn't want to do it. And we don't even know if the next movie will actually happen, let alone if it'll be a true sequel or a reboot.