Most YouTubers never get to a point where they can make enough to make it their main job.
Which means most of them get to experience failure early on in their life. I think this is a good thing for them in the long term.
As someone who just followed through all the usual treadmill of doing well in school, going to top college, etc. just to find out later that there was this entirely different and more exciting world of entrepreneurship where I can decide my own destiny, I think it's good to experience failure as early as possible in your life.
A lot of people who are not cut out for unstable life will realize it's not for them and just go on to live a stable life without regret, and many others who can recover from the failure, will have learned some lesson which can be helpful in their future adventure.
Also "Garbage" is a subjective term, I personally see many mainstream journalism driven by ad revenue much more garbage than many Youtubers who create unique content that you won't get anywhere else. A lot of the successful ones actually start out doing Youtube because they're passionate about the topic they make videos on. It's the failures who jump in just for the money.