I remember watching this when it first came out and I was honestly as upset as him. But don't worry, it's for the benefit of everyone so they can make AI as best as they can or some shit. But really it's just stealing with extra steps.
Remember that every single piece of AI art, music, and video you have ever seen was made entirely out of stuff found online and most likely taken without people's consent.
None of these companies are stupid enough to train on unvetted channels full of random videos. They are selectively taking them on a channel by channel basis.
They're all in in the insane race for dominance against each other. I doubt they rate quality that high right now. They want data fast to get money first.
Obviously they are since i got a youtube premium feature the other day that gave me a button to skip a sponsored segment and it's most likely an ai that said the segment starts here and ends there from learning the sponsorship patterns.
As a other premium user, trust me that is not the main reason I use it, it's entirely to get rid of ads on mobile. I use the feature occasionally on mobile too but on desktop I use sponsorblock and it's wayyy better both from an accuracy and user interface standpoint.
Sidenote: I also am on a plan that my parents pay for, though I used to pay for it myself after getting it for free for 6 months and I couldn't go back to the ads