I really, really don't like it when people do that.
Let the developers free to do whatever they want. 100% white, then 100% white. 100% black, then 100% black. They want to stereotype as "redneck", "black gang", "asian nerd"? All male? All female? Let them do whatever they want.
If someone wants to make racially diverse games, they're free to do them.
Who is the racist? The one who doesn't care and just does whatever he wants, or the person that wants to see a certain race in game?
Imagine you're a developer and you have this amazing concept of a black boxer character, and here comes someone and tells you. "Sorry, too many black people, black boxer a stereotype, make a white guy instead". No, I want to make a freaking black boxer!
Do we whine about japanese animations and games having asian faces and art style? No. We won't play it if we don't like it, but we don't go telling them to make white characters and change their art style or call them racists.
Same with everyone, if you don't like something don't play it, but don't tell the developers what to do.