He stopped making videos 3 years ago and said open source progress in gamedev has restored his enthusiasm. So he might be willing to share his videos on principle.
You don't need a YouTube account to be able to watch YouTube you can just follow the link. Although honestly I don't understand the hate for YT. I mean sure the ads are annoying but ad blockers exist and still work, despite all of Google's machinations.
@tilvids@mstdn.social probably can provide more information. But you can also look at a few instances. Some do list their running costs and ask for donations.