Its not just youtube. I unsubscribed from LA times after their email newsletter had one too many "Doctors don't want you to know about this!!!!" esque ads. Pure poison marketing. I can't believe people greenlight this crap to run on their platform. Maybe they already fired who greenlights ads.
For me Washington Post and Daily Beast newsletters were filled with ads for "Grunt Style" brand qanon clothing, sometimes all 5 or 6 of the ads in a given newsletter email. I ended up DNS blackholing some FQDNs, but I suspect that Grunt Style was targeting ads to "own libs".