We should displace the gender roles.
I agree, but the way to do that is not for the women to become men. Rather, learn to be a good pilot while still being a woman.
I understand the mentality behind the "polished shoes" comment. My flight school also required ties, though not epaulettes. I think they are trying to encourage a habit of discipline in all areas of life by requiring it in the area of appearance. Works for some people, not for others. During a long career in the cockpit you'll meet many immaculately groomed people who are terrible pilots, and vice versa. We all initially judge by appearances because we don't have any other data at first glance; just be aware that this judgment is not always correct.