There has been some noise about the state of accessibility in Linux last year. Seems that things are improving and the Devs of major DEs are taking things more seriously. From a more recent blog post on the topic:

Developers Are Rising to the Challenge

Here’s the good news: I’ve talked to developers from GNOME, KDE, and Fedora.

They get it. And they’re taking it seriously.

GNOME’s Wayland session is now stable and usable with Orca. KDE is catching up — and has a legally blind developer leading accessibility improvements. COSMIC is building Wayland from scratch with accessibility and global hotkey support in mind. For once, accessibility isn’t just a postscript. It’s in the room where design happens.

This transition is happening — but we’re not being ignored anymore.

https://fireborn.mataroa.blog/blog/i-want-to-love-linux-it-doesnt-love-me-back-post-4-wayland-is-growing-up-and-now-we-dont-have-a-choice/

The other posts in that series gives a good overview of previous things as well. Seems that author has been successful in raising awareness about the subject which hopefully will help improve things.