I mean, if a lot of people get told that something is true for a long period and by different sources, they will accept that as the truth.I wonder how much of this is due to the 'algorithm.' I get where they are coming from it, but it is definitely proliferating shitty views and giving bad people a platform. I believe OG youtube didn't have those problems. Yes, there were idiots on it, but it was very difficult for them to reach many people.
Except in Youtubes case, they keep you in your lane and keep serving you videos reinforcing that core belief by the algorithm.
Creates a lot of engagement and revenue. Also creates a lot of crazies.