I think this post sums up some of the things that bother me about the movie and says them better than I could.
I still like the movie, though I kind of desperately want someone to write fic to fix it. I'm not sure fic can. Well, maybe the Latika portions could be. I don't know about the cultural appropriation bits.
Also, to help cheer you up after that, here is Dev Patel being a giant dork:
Courtesy of glassbomb