I sorta get where you are coming from, as in I do appreciate all of Harden's efforts while he was in Houston and don't begrudge him for wanting a change in scenery. That said, he also has (seemingly) taken no responsibility for any of the moves that Houston made to keep him happy. There were definitely some "win now" moves that didn't pan out in terms of a title, but that came at least in part at Harden's behest. Did the Paul trade come without his input? The Westbrook trade?
Also, again, I get that he wanted to be somewhere else but he left in a spectacularly shitty fashion. I've had team members leave with lots of notice and team members leave with no notice / shitty effort on the way out. There are definitely some I wish success for more than others.
I am not rooting against the Nets / Harden, but I sure as hell am not going to be upset if they go out early (injury or no injury, those are part of basketball).