I get that you don't enjoy their content, but it seems like you are missing the point on purpose just to shit on those creators.
Every basic cable channel has ads, including ones mostly watched by children. Nick Jr type shows are pretty intolerable to me, but I get it - it's eyeballs.
The channels you're describing have long videos with high engagement, viewers watching multiple 15+ min videos in a row are some of the most valuable on YouTube.
