To be fair the combined overrepresentation of men and underrepresentation of white people may well mean white men are overrepresented, and you started your post

To be fair the combined overrepresentation of men and underrepresentation of white people may well mean white men are overrepresented, and you started your post with the words "White men". But yeah, in terms of ethnicity those figures are not what you would expect from reading some media representations of the tech industry. I'll be interested to hear what the big problems and flawed reasoning alluded to elsewhere are.