Maloof is an interesting guy. In a way, I find it more interesting to get inside of his head than Maier's.
From the outside looking in, he seems sort of conflicted. His Flickr page is filled with street photos that he started posting after he found the Maier archive. I find it fascinating that he chose to emulate her.
He's young, so some latitude is called for. He seems to be going through a "find yourself" period. Does he want to be a photographer? Does he want to be a documentarian? Does he want to be a curator? Does he want to be a researcher? Does he want to be an entrepreneur? Does he want to be a real estate guy? I'm not sure he knows, and that gets to the central weakness (in my view) of the film: It never seemed to make up its mind if it was promoting Maier or Maloof. Put another way, the film can be viewed as using Maier as a vehicle to promote Maloof.
If there's something "ishy" in Maloof, I found it there. But as I said, he's quite young, and as such I give him a lot of slack in such things.