Again, I'm not threatening and I'm not saying I'll stop supporting the autistic community just bc one member was mean to me, I'm saying I'll stop supporting THAT particular member. And that's not ableism, that's a personal trouble.

Making your support of someone conditional on their behaviour is a threat. It is saying “You will do what I want, or I will support hurting you.” (Remember, silence is assent to the status quo, and the status quo is “autistic people are dehumanized and tortured and killed.”) That’s not support - it is very literally how abusers keep their victims in line. Anon, please stay the hell away from all of us. We don’t want your thinly-veiled abuse.