It seems expensive. I understood YouTube had reduced payments to content providers. Can it really support that machine shop? Or is the guy independently wealthy?
To a first approximation, no one should go into content creation (whether YouTube, a podcast, a book, a blog...) with the primary intent of making more than some token amount of money that makes driving for Uber seem like a pretty cushy gig.
Doesn't mean you shouldn't do it of course. Direct money (as opposed to supporting other activities) isn't really one of them though.
I'm guessing the majority of his income for these videos comes from Patreon, although with his current 167 subscribers at $5 or $12 per month it's not a living wage.