I think a few people are missing the actual criticism behind his selection. The criticism isn't simply that he's a white male.
The criticism is centered around a no-name w/o real leadership experience being once again given a huge opportunity to lead a major house.
Who happens to look like all of the other recent no-names w/o real leadership experience being selected to lead major houses.
McQueen is a huge name. His promotion wouldn't have received this type of attention if he had, say, been promoted or if he had experience leading a prior team; something more of a lateral move.
Fashion design isn't really a predominantly male-oriented business; it isn't even limited to one racial group. It is actually a pretty decently diverse industry across all sexes and genders, ethnicities, orientations, etc etc etc. Senior designers in the industry aren't all white men.
The question consumers are asking is 'then why does such a diverse industry look the same across the top?'
Personally, I assume they want to pivot this brand slightly towards more streetwewar, so I really have no interest. Just reading the comments, I could see that some are missing the actual point.