It's not 100%, but I'd consider "video games" => "Ben Shapiro" to be a pretty awful recommendation system, regardless of the reasoning behind it. As far as I know, the group "video gamers" doesn't have a political lean in either direction.
I've definitely seen this with comics. I watched a few videos criticizing Avengers: Infinity War, and now I see mostly Ben Shapiro recs. It makes no sense. I never have (and never plan to) seek out political content on YouTube.
They don't. That's confirmation bias at work.