The dislike count was useful to pick up on

* clickbait headline videos that don't deliver - ie, content in thumbnail never shows

* obviously some political content has been getting dislikes which is embarrassing and risks govt coming after them. Trump threatened this and dems are also now making noise here, so these platforms are vulnerable.

* Dislikes were pretty rare, usually in my case I had to be really annoyed at something to dislike it. I didn't mind scams that were properly described, but some stuff is annoying because it's a bait and switch.