Why some jealous detractors thinks BTR is the worst hiển thị on Nickelodeon?

I try my best to put this in the most polite way and I don't want to sound cynical hoặc condemn ALL adults, but I found this quote very appropriate:

The hiển thị really isn't aimed at adults. What I've learned is that most things that adults would consider "dumb" are the things that kids find hilarious.
(Quote from a diễn đàn post from the IMDb)

I have read some rather negative reviews from mostly adults. I'm not suggesting that adults cannot enjoy this show; in fact I know many who do. The humour of the hiển thị isn't aimed at adults. The primary target is six and upwards.

And I don't want to sound rude but adults shouldn't suggest what's good hoặc bad regarding that matter because most of them don't understand.

maybe because this hiển thị is for teens ONLY