The hard truth about autism acceptance that a lot of people don't want to hear is that autism acceptance also inherently requires acceptance of people who are just weird.
And yes, I mean Those TM people. Middle schoolers who growl and bark and naruto run in the halls. Thirtysomethings who live with their parents. Furries. Fourteen-year-olds who identify as stargender and use neopronouns. Picky eaters. Adults in fandoms. People who talk weird. People who dress weird.
Because autistic people shouldn't have to disclose a medical diagnosis to you to avoid being mocked and ostracized for stuff that, at absolute worst, is annoying. Ruthlessly deriding people for this stuff then tacking on a "oh, but it's okay if they're autistic" does absolutely nothing to help autistic people! Especially when undiagnosed autistic people exist.
Like it or not, if you want to be an ally to autistic people, you're going to have to take the L and leave eccentric, weird people alone. Even if you don't know them to be autistic. You shouldn't be looking for Acceptable Reasons to be mean to people in the first place. Being respectful should be the default.
smh kids these days don't understand the point of rickrolling. "haha nice try but the ads on the video prevented me from being rickrolled!" so what you're saying is... you clicked on the link? you clicked on my silly little link expecting something else, but it was actually rick astley's infamous music video? sorry bud, just because you didn't take the time to look in the mirror doesn't mean i missed you with my clown makeup beam. you're still wearing it.
Everytime I start in a new team at work I realize that a lot of neurotypicals straight up go into a social situation not having to fear being judged entirely off the fact that you "acted weird" once and then being treated like a toddler for the rest of your time together. Some of y'all never had to deal with seeing two adults smile at each other and belittle you like they would if a 4 year old told them they're holding a wedding for their dinosaur figurines when you said something completely serious and it shows.