Isn't that the reverse effect? I could never watch football (soccer) as a child - why would I want to watch other people having fun when I can go and do it myself! Invariably I'd respond by going out to play [with a] football.
Let's be fair. Even if those videos weren't there the chances of most people investing 15k on the hope of sticking to learning a complex skill are slim.
From the other side: watched the videos, bought a ton of stuff to have my own machine shop. Now the videos are even more relevant - it’s the little things that mean so much. (Like the fun tricks to know something is parallel or square or the different ways to measure something).
It was really expensive, and I already had a background in automotive work and woodwork to some degree, and a decent IT skill set, but damn, machining is really gratifying.