It really does. But also, having to do this points out a glaring flaw in the design of the fediverse websites. They're applications and not documents. They require executing complex code from unknown third parties just to show a bit of text and some multi-media. This isn't needed at all. And it wasn't like this till mastodon v3 when they broke it.
Despite requiring Javascript execution mastodon actually does have the post contents of a URL in the hidden meta-content HTML header on the page where it scolds you and blocks you for not executing their arbitrary code. All they'd have to do is put that same text in the HTML as actual <p> text. And it's not just mastodon instances, the other fediverse "applications' are just as silly in their intentional breaking of accessibility for no reason.