Having been a manager in an organization in which there has always been a significant number of "traditionalist males" (although I confess that I didn't think of them in that way) in mid-upper and upper level leadership roles, I can see that this does reflect reality to some extent. A male who is outspoken in his opinion that there is no real gender-based difference in management potential would have trouble with obtaining the positive references from higher-level managers that are vital for his own organizational advancement, not because of any vast right-wing conspiracy but because they would have the unthinking gut reaction that "he is not one of us".