I actually completely agree with this statement. I tend to follow the gaming industry pretty closely and lately I've noticed that there are simply too many low-quality gaming YouTube channels.
I was recommended a video the other day "The Downfall of Blizzard" or something like that, started watching it and was surprised at how incredibly bland the content was. Even more surprising was the amount of views and likes the video had. The jokes were bad, the production quality was low, there was no critical or opinionated analysis, etc.
There are tons of channels like this, full of videos where it's just some some guy or gal talking to a camera with some uninspired editing and generally run-of-the-mill content. And this is just one slice. I see this kind of content everywhere now.
Of course, everyone wants to be happy doing what they like doing, but it simply isn't sustainable that everyone lives off of their hobbies. Not only are they providing little value in general, but they're just not really good at it...