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.
The Best of World SF is undeniably an excellent sampler of voices from around the world, both of authors and of translators.
The editor comes off as maybe a bit self-centred? But I can't deny they have excellent taste and connections.