My pet peeves are

1. People who are intentionally ignorant. When, I say that, I mean people who can’t/wont look things up, and would rather live in ignorance. Or they won’t listen, or change their views when presented with scientific proof that refutes their perspective.
2. Saying things like “Everyone’s a little autistic, or “Autism wasn’t around when I was younger”, or some such ableist nonsense. It demeans and belittles my life experience, as an autistic adult. It was around, it just wasn’t known about, or diagnosed.
3. When someone takes the time to either explain my poetry to me, or tries to tell me that I need to change it, as it’s clearly about them. If that were the case, believe me, they’d have no doubt.

Also under number 2 – when people try to counter your feelings of chronic or suicidal depression with such verbal antidepressants as “Cheer up” or “You just need to think happy thoughts”.