As a 5'6 man with a girlfriend who is 5'7, anyone insecure enough to buy these shoes needs to start looking at their priorities in life. Just be you, own it man!
My best buddy is about 5'4" and a bit round too, but I have never sensed for an instant that he feels hampered by or insecure about it. He's a smart guy and happy with himself. He has my admiration, as do you.