@taylorlorenz
As a person on the autism spectrum myself who has struggled with associated social issues I must respectfully disagree with the thread in question.

Mastodon — and the wider Fediverse —may be decentralized, but there are aspects of its culture that are actually more inclusive to people with disabilities than Twitter was, such as the custom of using alt text with images, which is extremely helpful for those with vision impairments and/or blindness. Additionally, I would strongly disagree that decentralization necessarily implies marginalization any more than centralization implies inclusion; indeed, a centralized system run by open ableists would arguably be far worse for the disabled than a decentralized system. I would also argue that saying centralization is necessary for visibility of the marginalized implies that a central authority is needed to keep people at large from collectively being ableist and ignoring disabled voices of their own accord. Despite having seen and experienced ableism towards myself and others, I do not agree with this worldview; indeed, I find it openly contradictory to the democratic ethos of the Fediverse as a whole.

Also: some of the most inclusive spaces I have found online for people on the spectrum have been places like Discord and Mastodon which do not involve centralized moderation at scale, and they have also been places where I have been most able to actually change people's minds on ableism, as Twitter is not a place where I have ever been able to actually have a proper conversation with someone and convince them of something because of the culture and layout there.