As a fighter, he's near perfect from my view, but I think the reasons Dana White hates him are:
-he fought Wonderboy the way you have to fight him to win, especially when you are short like Woodley, but that shit was boring.
-He tore his labrum in the first round against Maia, and had to fight a very defensive fight to beat the best pure grappler in MMA history. Once again, that shit was boring.
-He is probably a bit of a pain in the ass from the promoter perspective, but I have to imagine most successful champs are not all personality machines like DC. He makes weight, he does well when they put him on the desk on Fox, and fights whoever they ask him to and wins.
-He doesn't get 7 figure PPV buys, so he apparently has to be fun to work with for Dana to support him publicly.