Everybody hates teenagers, so yes.
It's not really about protecting them; people that claim this is the case are generally doing so to launder that hatred.
Brilliant observation! I would like to make the statement more precise: not hate/hatred but jealousy.
This is the kind of thing I would have posted while in High School.
They're not hated, they're just treated as non-entities that aren't assumed to have or need any agency.
People under 18 are the largest disenfranchised block of citizens.