alt Hacker NewsYes, buried in the settings of each account on each service.
Parents want the equivalent of being able to let their kid go to the mall and trust that the movie theater will not let them in to an R-rated movie. They don't want to have to call the theater, identify the child, and say "don't let them in to this list of movies".
Movie theater attendant is a highschooler not a member of the stasi. Age verification doesn’t even work in the meatspace.