As far as I can tell from following various people on Mastodon, reading blogs like this etc, is that it really falls short.
And it hurts to see more cool and interesting accessibility technologies become unusable and unsupported because people are chasing "shiny" and "modern".
You're not allowed to do anything on Linux unless Gnome people like it.
For reasons like these, operating systems like Windows XP or 7 are still necessary for many accessibility related needs.