From the article above:
The transition should be easier on offense, where Cousins too often undermines his own talents with hilariously bad judgment. He fancies himself a long-range shooter, but he cannot shoot very well. Cousins shot 32 percent on a totally irresponsible 5.2 long 2-point jumpers per 40 minutes last season, per Hoopdata.com; among 117 players who jacked at least 3.5 such shots per 40 minutes, only Rudy Gay, Anthony Davis, and Michael Kidd-Gilchrist hit a lower percentage than Big Cuz.
But on topic, cousins is terrible on defense, and its not because he can't be good at it, it's because he doesn't try. Regardless of how bad the culture in Sacramento is, that can only be blamed on him