Older teens probably think this is a little kids game and they want to play "real" games, my assumption. And adults... most of them are annoyed by kids in the lobbies... how would this work with adults and little 7 year old kids... Other than predatory reasons, I don't think it makes even sense. Maybe they are afraid of the kids growing up and stop playing it, and want to provide something so they don't leave... no idea.

It could work if there is a clean cutoff with a second app, that is not for children and marketed as such. But man, that would be a nightmare to handle too..