Hahaha...oh...the entertainment this forums brings me is even greater than my enjoyment of the actual game.
Baiting with an OP that few agree with and never coming back...
Arguments that stutter and die as the person who said something foolish realizes he was quoted so he cant fix his post and instead has to lay low for a while...
Two or three people convinced that the facts they are pulling out of the air are absolutely true, despite being able to check this information with about 3 seconds of work (you're already on the internet. Just google it. There are 4 different wiki's on the topic.)
Good times all around.
That said, I do not believe the PrEs are too front loaded. Just my opinion, focusing on casters, Monks and rogues. I'm not sure if the others are front loaded (it seems unlikely, but is possible).
If they are...well...good for them. They need it for certain builds to be competitive.