I have watch history turned off anyway so I wonder how it’s deciding that I should watch these clips.

This is why, lol. Since his videos are generally popular on YouTube, if you have no watch history for your recommendations to be based on, it’s just always going to feed you whatever’s popular, which will include his stuff.

You’re doing it to yourself, in other words. I actually have watched a couple videos of his in the past, and yet, because it’s rare, I never see his videos being recommended to me. Hell, in my experience, stuff recommended to me is rarely similar to things I’ve seen more than a month or so ago.