They are infantilising people by making excuses that this is for the children. Teenagers may also be under 18, yet they don’t seem to care - they’re lumped right in with clueless children.

Teenagers are also people, and are closer to adults where they have their needs and wants. This goes against their safety, by duming them down. Its only a while since theyre going to consider under 25s as children as well - “for the peoples own good”.