Earlier quoted context omitted.
If you look up "how much I make on youtube" videos you can see creator's dashboards to give you some evidence. The answer is that it varies vastly depending on audience, county, topic and advertiser's interest. "$0.25 to $4" $ per thousand views -- https://techwiser.com/how-much-can-you-make-from-youtube/
So for a few million views (==3m?), that translates to $600-$12,000? huh, I would not have guessed that. But I also have no concept of how much a few million views is for a typical content creator.
Go full time crushing things with an hydraulic press? Yes! Go full time discussing medieval weapons? Yes! Go full time building things with no tools from scratch in the woods? Yes! Go full time trying to beat Super Mario as fast as possible? Double yes! And so on.
My point is, this revenue is more than enough for interesting content to be produced, content that would never exist without this kind of monetization scheme. It might not be the best model for high end documentaries or movies, but it works for a different set of content which is still highly sought after.