Losing access to personalized YT would suck, but losing decades of emails would suck even more (when I initially got GMail, I imported all my old emails in … I guess I should probably look at making a backup periodically, like I used to). I share your sentiment that I fear what these companies are going to do next in the pursuit of more money they can burn and/or give to shareholders as they continue to tank their reputations.
I don’t know if you like podcasts, but Know Your Enemy is a take on the right from two leftists who used to be conservatives who approach it from an intellectual POV.
I linked to the political magazine that helps support them since it gives some rundowns of their topics that might give you some of the sources that can be read instead of listening to their podcast, if you’d prefer.