Fedi seems to be really great for accessibility from what I’ve seen. At least I’ve never never interacted with so many visually impaired people before joining mastodon. So I’d say that culture is working.
I believe there’s a nice way to go about (honey v vinegar, etc), but generally yeah, it feels really good to be in a virtual space that is so welcoming.
Can’t say personally, but for many it’s the first time they’re even looking at what other engines have to offer.