It didn't, because there is barely anything of any substance on YouTube. If there is, it's by someone with a production team - which is very far removed from the use-case of a blog.
I’m currently watching a 6-part series documentary on a group of people who spent years of their lives attempting to complete Mario 64 in as few presses of the A button (which is the jump button, probably the most important action in the game) as possible. It’s around 4 hours long (so far), made by a single person and goes extremely in-depth not only on the timeline that tricks were discovered, but also on the game’s mechanics and how the absurd glitches used by the runners work under the hood.
To say productions like these aren’t of substance is just ignorant at best.
Substantial, I think. I've been there and I learned stuff from this video. And he does not have "a production team".
I kinda find that YouTube feeds you what you want to find, once it knows a little about you. If you want insubstantial content, it's absolutely there, but you can tell it not to serve you slop in an instant.
Lot of mechanics, carpenters and other tradesmen showing you how to do a lot of practical stuff.
What are you missing there?
However with all such things, there is finite amount of knowledge. We are now getting to the end of one generations outpour of knowledge and the cycle is repeated with next-gen.