Firefox

I'm afraid the reason for that is that is that it's the only place where Firefox has full control over the upload experience. Like, how would Firefox even be able to insert an alt text when e.g. I'm uploading a pic to Mastodon, without adding special cases for every website (which would break whenever the websites update)?

Though I wouldn't be surprised if at least some "copy suggested alt text to clipboard" feature would be added at some point.

In any case, sure it's an edge case, but it's still weird to be angry about "AI" for it. It won't even download the model if you don't use it, AFAIK.