I have the same experience. I police my algorithm aggressively to the point where I can immediately tell if they’ve made adjustments to it. I’ve blocked american sports channels repeatedly over the last couple years, for example. Youtube shorts contain the highest ratio of right-wing rage bait. Despite never, ever engaging with these videos and actively downvoting and blocking these creators outright, right-wing rage politics are regularly injected into my recommendations, a feed that is mostly focused on music, games, science and technology.