Looking into some comments, it sounds like YouTube is supposedly so averse to COPPA violations (collecting data on child viewers) that content it believes to be truly made for children then must be designated as such, even if the maker accurately marked it with a 18+ rating.
Youtube therefore would rather emotionally scar or groom children than accidentally collect their metadata.
I'm sure that was a very minor glitch, and not something that could be easily exploited for greater Elsagate content.
Looking into some comments, it sounds like YouTube is supposedly so averse to COPPA violations (collecting data on child viewers) that content it believes to be truly made for children then must be designated as such, even if the maker accurately marked it with a 18+ rating. Youtube therefore would rather emotionally scar or groom children than accidentally collect their metadata.
Ah, yes. Another successful government regulation with "unpredictable" side-effects.