It's a Start
Suppose you are a member of the dominant, privileged group in your society. Straight Christian white men would be the intersection of the Big Four, at least here in the US (not that there aren't more). And suppose I hear your whining about something that inconveniences you due to action, however slight, that may be beginning to restore the balance for a disadvantaged group.
Congratulations, you have taken the first step and admitted your bigotry! Outing yourself was hard, I know! But you've gotten over that hurdle and can now start to work... on... wait... what? I'm sorry, I didn't catch that...? Oh, I see. You didn't intend to out yourself as a bigot. You insist that you are not X {where X is your bigotry of choice}? Well, this is awkward. Saying something bigoted and then insisting loudly that you are not bigoted is prima facie evidence of bigotry, tempered only by your dim awareness that bigotry is Not OK.
I think this is where a lot of people start on their journey to genuine understanding of diversity. It's the people who never move from this place, that are a problem.