no, it is not a real criticism. The reality is that most developers create their characters as white men because that's what the majority of characters in any form of media are. Is it a bad thing? No. It isn't a good thing but it isn't harming anyone.
Yup I more or less agree with that. White male is basically the default, in a few cases developers are now saying "well ... hey, maybe the character can look at little different". And that's fine too, that's just a developer realizing that the audience their making games for isn't a one dimensional demographic.