I do wonder whether the algorithm understands sarcasm. A while back, I watched a video about some movie bombing, something objectively bad like Morbius, and they joked that the movie wasn’t actually failing for all of the obvious reasons, but because it was “too woke”. They didn’t really believe that, they were just making fun of people who say that about movies. Still, for the next couple of weeks I had to keep marking channels as “Don’t recommend” because they were all unironic right-wing rage-bait about the woke agenda. I don’t know for certain that that’s why I suddenly got all those recommendations, but that was my best guess.
I’d say it started on at least Nintendo 64. The original Japan-only Animal Crossing game for N64 had playable, emulated Famicom (NES) games. Nintendo even ran a special offer to get an N64 Controller Pak with Ice Climber pre-loaded which you could plug into your controller like a game cartridge and play inside Animal Crossing.