I don't really like the production values / content is these channels and don't watch them. I don't know but maybe they are at the mercy of the 'algorithm' and huge ambition. The channels I do watch seem more stable and somewhat more satisfied with their views.

Then there's Cleetus McFarland which has diversified and taken business to the real world but even they have been pressured by the popularity of 'stupid' auto related channels* to make more jackass style videos.

*WhistlinDiesel