My kids are still far too young for unsupervised YouTube/TV time and are still firmly in the "Bluey or Ms. Rachel" age, but there's already a hardline Mr. Beast ban in my house. Hopefully by the time they're old enough to want that kind of content Mr. Beast is but a memory and YouTube will have much better content controls in place.
Sadly that seems unlikely - and AI-generated content is not going to help.
Beast and so many other YouTubers that target the very malleable 10-13 years are causing brain rot like we've never seen before.