I can understand the resentment. Sure, the Rock gives WWE mainstream exposure, but no one that tunes in for the Rock is going to stick around for the rest of the roster while every shred of focus and storytelling time is being lavished on Rock, Punk, and Cena.
Personally, I think the Rock should've stayed away. The build up to RR was awesome, but the match and followup were so anti-climatic that it almost would've been better if it never happened. Now the title is on someone who's garanteed to lose it at WM to the most hated and overpushed guy on the roster (for the sake of short-term buys), and Punk has no match with Taker and could quite possibly wind up buried. So what exactly has the Rock contributed, aside from superficial excitement and making the real roster look useless?
This is the difference between the Rock and Jericho. When Jericho comes back, he leaves the product in a better shape by putting over talent and giving us great matches. When the Rock comes back, all he does is steal valuable spotlight and get puffed out in the ring. And now even his promos aren't that good. Sorry if I seem like a hater, but really. The Rock isn't the savior some of you marks beleive.
The Rock is a short-term solution to long-term problem, like putting a band-aid on a broken arm. The WWE need to shift focus from 'dream matches' onto real matches. But this is nothing that hasn't been said before, so whatever. Point is, I think a portion of the lockeroom is entitled to a little resentment. Some of the fans are, too.