Don’t mistake someone trying to encourage positive behavior as bully. Just because you have one of these behaviors doesn’t mean you correctly self-diagnosed yourself with autism either
Encouraging someone to do something doesn't mean them not doing it is bad. I can encourage you to try mayo instead of ketchup on your fries, without implying that you're an asshole for eating your fries with ketchup. Also, I'm pretty sure me saying "maybe you'd like fries with mayo if you tried it" isn't bullying. I faced a lot of these issues when I was younger, and while I don't think it works like that for everyone, I genuinely got over a bunch of them by just forcing myself to confront them.
The point stands that people should be less self-centred when it comes to what's 'normal', but some of the examples in the tweet come off as (ironically) quite judgemental.
Meltdowns often include bad behavior. If your meltdown includes slamming a door, cursing at someone, yelling in an inappropriate setting, disparaging someone else's preferences, choices, or lifestyle: that's bad behavior and someone calling that out, or excluding you from activities due to those behaviors isn't bullying no matter if that behavior can be explained by autism or not.
Upholding the hegemony of neurotypicality as the "acceptable" way to be, and the encouraging of neurodiverse people to mask their (fine, unharmful) behaviours. Masking which actively harms them.
All this does is promote ongoing ableism. I beg that you read something about the experiences of autistic people and come to understand how marginalized and harmed they are by this continual shaming of these traits. Traits that are not harmful, or even uncommon. They're just different, and less normalized.
This discussion is about people on the spectrum, so I want to preface by saying I am not. Having said that: I don't need strangers who know nothing about me to give me suggestions for how to "effectively" "self-regulate." It's always someone with zero experience whatsoever on the subject, too. Like, thanks but no thanks for taking a few minutes to consider what I have been living.
I had a moment like "why am I getting into this?" IDK. I just recall being frustrated when people show up and give me advice I don't want or need. And the advice is not helpful because they're a tourist in my life and I am a resident. "Don't mistake someone encouraging good behavior as bullying," no, just take that attitude all the way away from me, thanks.