unlike others I don't pretend to be a legal expert, that's why I've written "most likely not even legally liable" in the first place. I think I've made it pretty clear with that sentence that I'm not sure, but I see it as highly unlikely that persons mentioned in the article will face any serious legal liability over their alleged actions.
But let's wait for the court session (if there will be any), shall we?
teenagers who most likely are not liable to the same extent as adults
would it have satisfied your pedantry, or would you still argue to the contrary?