r/Blind is still a valuable resource for many people. No sense denying people access to it. r/Blind mods already created a Lemmy instance which they try to promote for their members. But learning new software can be challenging when you can’t see, especially if the software isn’t very accessible.

It’s not a feature of Lemmy and, I guess, no-one has wanted to create it for their app. You should submit this idea to the Lemmy developers so it will eventually be a feature in every app.