I'm going to be honest here. There was a time when TNG and 90210 were on the air the same time and in the LA area aired at 8:00 and 9:00 respectively on Wednesday night, and my girlfriend at the time and I would make an evening of it. And, yes, it was teen drama. And, yes, some of it was very silly. And yet at the same time, some of it was very compelling stuff.
I remember people writing off Veronica Mars making the exact same 90210 comparison, but Veronica Mars is nothing like 90210. Neither will be Starfleet Academy. The people making the comparison are grasping at straws to confirm their preconceived biases and notions, same as always.