I don't think it's about UX at this point. It's more about critical mass. Unfortunately, YouTube is where the videos and audience are... yes, it's a Catch-22 situation.
Youtube is certainly useful for discovery and monetization but if the goal is to share a video that may be censored I would suggest everyone should upload to {n+2} locations at a minimum and link to both YT and the self hosted mirrors from a blog after linking to the blog from YT. It's easier than friends of YT would suggest.
In case of YouTube I wouldn’t be so sure. Yes, it’s the central hub for making your name but many YouTubers came up with their own platforms for exclusive content to have more control over their business once they got big. PeerTube is inline with that idea and because of that might be promoted by big creators soon.
