What is the suggested alternative for hosting serious video content? Vimeo? PeerTube? BitChute? Some other video hosting platform that is either entirely a ghost town or hosting manifestly questionable content?
Discovering an algorithm to govern on-site activity by the general public that doesn't lift the scum to the top could be a decent start.
YouTube made it so easy to upload video to their site instead that vast swaths of the population now seem to have forgotten that you can also upload video to your own site.
If a medical researcher has something to say: they could upload it to their university's site, or to their own personal site, or to the web site of whatever conference they want to present their talk at. Upload it to their blog, and then share the post's URL...
YouTube's policies deserve scrutiny and probably criticism. But I think it's a dead-end argument to say that mistakes in YouTube's policies can entirely stop a video from being disseminated online.