I don't mean usual, on-topic clickbait consistent with the watch history. I mean that in the middle of said on-topic clickbait, one or two of the recommendation slots are always explicitly allocated to a broader, regional-level pool of inflammatory political clickbait completely unrelated to watch history.

So for example, I could be watching some niche technical videos, and my recommendations would be more of that for the most part. Except that on an English-speaking-country IP address, I'd also get some inflammatory Trump-related video among the usual recommendations. On a French IP I get the French equivalent, and so on.

So either consumers of various niche content (in unrelated fields, from retrocomputing to farming or vehicle repair) also all happen to be into political trash in various languages so much as to outcompete other on-topic videos in the recommendations, or the recommendation engine has an explicit feature to push inflammatory crap in addition to "organic" recommendations. I strongly suspect it's the latter.