To be fair , in Asia , nobody here cares whether the cast is represents all races diversely not . We just expect it to be made up of Americans because well, its Hollywood.  

Same thing with Bollywood and Hong kong /Chinese movies . Wouldn't you be weirded out if you suddenly saw a white guy as a main character in a Bollywood film.

I don't honestly get what all the fuss is about with Crazy Rich Asians.