I think if you are young and not a mum then the thought of wearing a mum boot is dreadful. If you are a mum, not so bad. No one wants to be hindered by a kitten or 4" heel when your toddler has let go of your hand and is running to the middle of a road (real event).
That said, I still have mum boot phobia. I'm sure others think mine are Mom boots, but so long as I don't.
I am really fussy about the heel and the shape of the front. I've just offloaded a pair as they were too spoony, and another pair as the heel was too block. I also got rid of a pair as they had a kitten heel, and they were too pointy. It's like Goldilocks and the porridge. I spent 6 months looking for the perfect pair of long black boots, but I'm sure someone will think they are mumsy as they are from Hobbs.