The rub for me comes from what I perceive as a lack of authenticity from Maloof.
If he were to present himself as he is, I'd have no issue. Instead, he is trying to present himself alternatively as a street photographer and a documentarian. There is nothing wrong with that, in and of itself, of course. The problem comes in that he is explicitly leveraging his arbitrary good fortune in discovering Maier's work to "jump ahead" in those fields, rather than paying his dues in those fields independently.