If we made the case for operating "at human scale" Youtube would be amongst first casualties.
to your last point :
> Anyone can upload a video and make it viewable by billions, instantly. I think we shouldn't forget how amazing this actually is.
By the same reasoning, COVID-19 is similarly amazing.
Opinions move on : Youtube is 15 years old now. It's a practical monopoly, being the worlds 2nd most visited website. I wont deny it's utility - but it's a gross centralisation who's modus operandi present significant questions - chiefly, Is it right that it has for years circumvented nearly all regulation applied to other media, and should it remains largely unaccountable to any elected power ?
So the challenge it seems is thus : how do preserve the good things that self published video content has done for us, but prevent or limit the consequences and attendant injustice caused by a service so infeasibly large. it's impossible to administer ?