I used to watch a channel called Human that was about arborist/tree cutting, they were very interesting vids as he dealt with climbing and cutting from the top down. Once covid began and the unrest with riots in the US he started to lose the plot and ended up with more incoherent nonsensical rambling vids than anything to do with tree work. It was a pity because he had a good channel with decent content but once his slip into delusions began l unsubscribed.
These days if any channel l subscribe to slips into politics, religion, woke shïte, etc, l just drop it, l watch YouTube for entertainment and in some instances learning, not to listen to preachy drivel...
Yes, I think that once the subscription figures start to rise, some vloggers can get self-important and get ideas above their station. I think it's a touch of the film/rock star syndrome. They get some level of success in one field and think that this makes them a fount of supreme wisdom on everything.