“Do accessibility for AIs” has the same ring to it as “do accessibility for SEO” had. It's the plea to at least do it for the robots if you can't be arsed to do it for real humans.

It's dehumanizing.

And sure, in some ableist instances it might work, and in the end how you get to accessibility does not really matter, but I have seen projects under these premises collapse.

For example, someone might suggest Markdown files instead of making stuff accessible. And poof, the whole argument is gone