That's an interesting theory, smells of truthiness. The problem is, if they wanted PvP to carry the game, then they needed to make PvP a hell of lot better than it is, starting with the atrocious matchmaking and abysmal net code. I really don't see the point of PvP, there's nothing to unlock, no advancement, no incentive to win other than pride and 15 rep.
I'm disappointed in the amount of PvE content, but I've still got plenty to do for the time being. Just got my Hunter to level 28, so now I have two characters to do Nightfalls and Raids with.