As a professional YouTuber, the main issue I instantly see with this is the lack of monetization. I think people who don't make videos for a living severely underestimate how expensive it is to produce high-quality videos people want to watch. This isn't like writing a tweet or even posting a picture on Instagram. Even a decent 20-minute video can easily take 40 man-hours of high-skilled labor. I have a pretty small…
I heard that main source of income for some professional YouTubers are Patreon and sponsorships. Ad revenue is dead last and very unstable. Also, if you are building your business on single platform, which one day might decide that your content does not adhere to their rules - that's a high risk to take.
I think people should be more aware of the perverse incentive of YouTubers saying, "my guaranteed source of income is very little and unstable guys, I need you to also subscribe to my patreon" where - could YouTubers perhaps have a reason to act like their ad revenue is very little? In my experience, while ad revenue isn't great, for any decent-size YouTuber its still enough to live on and in any case it always stays a significant income stream.