I think you are reading to much into kids trying to break norms and trying to be "part of a clique". It's not pretentiosness, it's part of finding yourself. They are also actively trying to get you to not read them because you are old and think they "are not serious" so mission accomplished I guess. And time will tell if these kids will invent something you have to respect. (Spoiler alert, we did and they will to)