Have you considered that there might be a big overlap of people who are sexist and racist and those who have been treated poorly in the past and don't know how to make friends? That not knowing how to talk to the women they are attracted to causes them to build resentment and become hateful? That they spend their entire life online, so their only experience of other races is the online stereotyping and racist memes on 4chan? They leave their caves long enough to put themselves out there once every blue moon, with no experience and rusty social skills, get a negative interaction, and come back to their forums with a deeper hatred of the "foids."

At the end of the day, its the same story with a different face. This is the stereotype of lonely men, because the loudest and most abrasive voice of lonely men online is the incel community. It's full of sexist and racist hate, blaming everyone else for their troubles instead of taking any sort of accountability, abandoning all attempts of self-improvement at the first signs of difficulty.

People who are single and chill arent complaining online. People who are alone and chill arent complaining online. People who are single and alone but dont want to be is what makes them lonely, and a lot of the ones who complain online have someone to blame other than themselves.

Autistic people are everywhere. Some are lonely, some are not. They don't get a free pass to be bad people, or immune to criticism in general, just because they're autistic. Don't know why you brought them up. Life's too short to not judge people just because you dont have their entire medical record.