Even before i knew the term "rareships" and acepted myself as a person who loved both rareships and crackships, i would find it extremely dumb and useless when people would complain about others "making ships that doesnt make sense" and wanting to start discourses about how those are the people who "are ruining the fandom" just for drawing unrelated characters kissing.
I was like, eleven years old and i was so confused on why grown adults were so ofended that there was people in the community just having fun by making fanfics of, idk, two random background characters having a date and getting married. I was like "buddy i dont see anything wrong with this, why are people allowed to draw fanarts and make fan content extremely different from the original things but "ships that doesnt make sense" is where you draw the line, it doesnt affect the original product or anything you can just ignore it, its literally not a problem at all".
The worst part is that it was an EXTREMELY popular (is still is, but not as much, from what i saw), everyone seems to agree that any ship that isnt the most painfully canon or clearly implied was an unforgigable sin and those who shipped it deserved public execution. But at the same time, no one, LITERALLY NONE OF THEM could tell a single valid reason of why they belive that, they just do;
If you ask them, they will pull up the most childish and nonsensical arguments as "Because it AGAINST the canon!", "They arent canon, so NO ONE should even fantasize about them being something!", or they would straight up admiting their only argument is that its cringy, and thats it. Sometimes they would create extremely specific arguments like "the creator of the story would probably HATE that you ship characters that arent meant to be canon!", wich i find one of the stupidiest. Most creators dont give a damn about your personal ships they just want you to consume and enjoy their products, and those who do have nothing stoping them from telling their public so.
And if you questioned that the hate for those ships could be a little unjustified, you were looked as the crazy one, no matter how much your argument made sense.
Other thing that i found funny was when people acted as if they are morally supperior for "only shipping things that makes sense", and i found that so annoying and dumb, why would you admit that you have no creativity and have such boring tastes!?!?!
Dont get me wrong, i can totally understand why some people only prefer to ship things if there is any trace of probability of being canon, i think thats totally valid. Its just the shitty actitude as if they deserve a medal for doing that and also harassing rareshippers, like no screw you.
Now, my opinion has intensified, because now im 100% sure that people who bitch 24/7 about "ships that doesnt make sense" are all the most boring, anti-fun and toxic members of every fandom and they truly deserve to have a time out of any internet community until they learn to behave and that shipping fictional characters will never be as much as a problem as they belive it is (im only half joking LMAO).