Two points come immediately to mind. First, he's playing against better athletes than he was earlier in the year. Second, after about a dozen games were in, he's not surprising anyone anymore. Opposing coaching staffs have watched game film, and he's a primary target for their best perimeter defender right off the hop. And this will continue until Ennis penetrates (and scores) earlier, and someone makes an adjustment there. Not saying it should happen, just saying that's the way it is. And what the heck, we're winning the way it is.
Let's also consider Cooney's learning curve is still on the upward arc. A year and a half ago, he was in HS, and last year he sat behind a 4 year player and a lottery pick. These last 4-5 games have been pretty intense for all, let alone someone in his position. Is he rushing his shot? Yes, he appears to be. I'd like to see him fake the shot and drive more than fake and pass it around the perimeter. Over time it would give him a little more room, and I think he'll figure that out through the course of this year. I'm happy with his play and his development, and I'm happy JB appears to feel the same way.