I watch a lot of YouTube and a fair amount of Twitch. Sooner or later every creator talks a bit about their anxiety working in that content creator grind. On Twitch, taking a day off may mean losing hundreds of subscribers. Streamers are cautious about taking bathroom breaks since they can lose thousands of viewers during a short break. YouTube ruthlessly punishes creators that don't upload on a consistent schedule.…
Youtube does not punish you if you are not consistent. That is simply a myth. There are plenty of very successful youtubers who only publish occasionally or irregularly.
I would believe that what you describe is true for long-established YouTube personalities, and I can think of plenty myself, but I can think of pretty few that haven't been doing it for at least five years or so (with the exception of the woodworking space, where it seems like perhaps there's still some growth opportunities despite plenty of creators--my guess is it's because the ad revenue is way better there). I follow a lot of smaller essayists 'cause I like that sort of thing and have a friendly recommendation network to leverage; YouTube very rarely recommends me long-form content, in either Search or Suggested Videos, from somebody I've never seen before.