Then it seems to try to make me more extreme in some way (flat earther, hardcore gamer, etc) based on perhaps one partial watch of a semi-related video.
Surely there's some folks at Google who can see the raging dumpster fire this has become? I realize it's hard given all the competing interests (esp. advertisers), but this is horrendous.
As bad as it is, Netflix's suggestions are almost worse. I think these companies are optimizing on metrics that (ostensibly) show an improved experience while in reality they're destroying almost all user enjoyment.
Is it really a good thing that I "engage" longer with Netflix/YouTube trying to find something to watch with their terrible suggestions? (vs quickly navigating to a better video?)
They're optimizing for highest profits. For Netflix, that means showing you videos with the lowest licensing fees. For Youtube, that means showing videos where the uploader has paid to boost it.
I'm sure bad recommendations are an issue for some people, but for me they aren't that bad. I've found some pretty awesome stuff I probably wouldn't have found otherwise through it, and I'm pretty sure even my worst recommendations are better than what I see opening youtube.com in an incognito window.