The only person with an unhealthy obsession regarding Despres is IC.
Most of the stuff you see is hyperbole. That doesn't take away from the fact that the Pens fell flat on their faces with that trade. It's made even more embarrassingly bad because Murray said JR went to him, and initiated the deal by offering Despres outright. It's not like JR was hesitant to let Despres go, especially for a no-value, no impact player like Lovejoy. He is the one who went out and dumped Despres (the asset) for basically nothing.
To "get over it" is one thing. I don't think anyone's seriously up in arms over the move anymore, but it was a ridiculously bad move by a team with an apparent need for making said moves over the past decade. Just more of the same old ******** from this franchise. That's why people are so angry, it has very little to do with who Despres is.