Social media for the blind:
Bluesky, hardly any Alt Text. To understand an image, you must open the post, tap on the image and hope your screen reader can describe it, or spend a minute or so scanning it.
X, hardly any image descriptions. The built-in AI will try to describe the images which is a major improvement, but you need to wait until the screen reader finishes reading all the info about the post.
Mastodon, loads of image descriptions. What a pleasure it is to browse my timeline here.

@AnyaKarl @blogangela @Macnutzer94 @RMa
Look, no matter how hard a few trolls may try to make a spectacle of themselves—that’s the reality. Of course, that doesn’t mean we shouldn’t keep standing up to them. Apparently, though, many more people take it for granted, thereby helping to normalize it.

In fact, even more and more accounts that used to ignore the request or made a huge fuss about it now use alttext as a matter of course.
@RabBrucesSpider1