I'm not saying that all those who have issues with Rooney the player are being influenced by their hatred of Rooney the man, but almost exclusively, those that have issues with Rooney the player, are being influenced by their hatred of Rooney the man.
He may not be the player that some people thought (assumed) he was going to be, and he definitely has had moments of poor form (there isn't hardly a player alive who doesn't), but he's about a season and a half from becoming the all-time leading scorer here. Considering some of the legends and greats that have laced up their boots for us, and also considering that Rooney has predominantly not played as an out-and-out striker for us, I'd call that a pretty significant argument for thinking he's been a top player for us. That, and the fact that his class is painfully obvious.
Even if you can't stand the thought of him being here, you should also be able to recognize that he's a special kind of player, capable of moments of complete brilliance that not many players would even attempt, let alone pull off.