I've watched plenty of Youtube, even the now cliched defenses of DIY home improvement stuff (sink de-clogging and drywall patching for me). But for as good and helpful as the pedagogical content might be there is still the other side that subsidizes all that, that fosters some crazed asshole shooting up a yoga studio and killing two people (YT ref'd in first paragraph)[1].
Is YouTube good? Sure. Is YouTube a societal net good? Absolutely not.
[1] https://www.cbsnews.com/news/hot-yoga-shooting-tallahassee-f...
edit: spelling