Yeah I don't like Reddit either to be honest, while I do like shitposting it shouldn't be the only thing to do and having an earnest discussion is good from time to time, though I'll admit I'm more of a lurker for that type of stuff rather than an actual participant, but I get what you mean, to be honest what little I've seen of reddit since it isn't a platform I use seems to be purely memes.
I'm always shitposting, but I do have some opinions on things that I guess need to be stated more earneastely if I am to communicate them effectively, as fun as shitposting is , it's hard to deduce what the poster's intention's are from it.
The thing is that language is fluid, the meaning of words is always changing and as such it's impossible to keep them consistent, I mean the actual definition of the word trap has very little to do with what's actually being discussed here, the problem is that it was given a negative connotation by transphobes, then it became an anime meme and now that it's used and status as meme has been solidified it's slowly being claimed by transphobes again under the guise of it just being an anime meme, like I get it can be funny and that there's lots of good memes with that word, but due to the fluid nature of language it's impossible to restrict it's use specifically to anime.
In any case the comparison to autistic seems fair at first, but the word autistic comes from a genuine medical terminology that unfortunately gets used as an insult which was later reclaimed mostly for self-deprecation memes, however the term trap when referring to men that look like women has it's origin on people actively using it to imply that trans-women are rapists, while the use of both words is similar the etymology of one vs. the other is a bit different and considering that one actually originated as a slur, like I said before I don't like the term and it doesn't offend me when it's used against me, but I can see how it would be more offensive to a trans-woman as the term is loaded, it not only implies that she's pretending to be something she's not but that she's also doing so in order to get people to do something undesirable, so it might not hurt my feelings but I can see how it would hurt someone in that situation.
So at the end of the day we have to ask ourselves is the word really fun enough that we should insist on using it despite it's negative connotations?
Are there words that could be used instead?
But of course if you think about it that's just the natural way of language, it may seem like censorship because the fast travel of information has accelerated the speed in which words get cycled but this isn't anything new, when I was kid words like retard and ****** were completely normal to use and nobody saw them particularly negatively but that hasn't really been the case for a while.