Why should PeerTube bother with that though? We all know YouTubers won't switch to it, infact, YouTubers will not use another platform ever.
They could just upload their videos to multiple places, but they don't. I think it's clear that the vast majority doesn't actually care about it. So what is the point of trying to appeal to them? They may as well priroritize their existing userbase, who are fedi hobbyists.