I can go further: comments broke all the way back with the G+ fiasco, G+ removed the ability to downvote comments, and ever since YT detached from G+ the new dislike comment button is as useless as the door close button on elevators: it does nothing.

So they've been broken for at least a decade now seemingly, and because video bandwidth is expensive nobody corporate will try, peertube hosting is expensive IIRC, and if your singular monolithic video site gets big well look what happened to BitChute. I wonder how that site is doing now...oh wait.