There isn't really money in from youtube videos themselves anymore, it's now just a platform to get an audience, then turn that into money by selling merch on your own. That or just building up internet clout for ego boosting reasons.
I do watch some tree guys stuff on youtube, but I'd rather see something that is a skill I don't have so I can learn, or see a tool in action and decide if that's something I want to add to my kit as well. When it's just 'content' and another boring video like the 20 before it, big yawn. Obviously we all know Reg is a master of the craft, and his videos are about the only ones I watch in full. That's because it's just nice to watch someone that good, same as a pro athlete on the field, and especially since he's so close to me and works in about the same trees, I can apply much of what he does to my own work.