I have to honestly say that I have never ever been lectured on shoes being a "man repellant" or more or less attractive to men. Ever.
I was lectured as young girl on keeping my legs closed (as in literally: don't "manspread", especially when wearing skirts and dresses, which is reasonable advice), not over-exposing cleavage and that men don't like too much makeup (this all through a mix of relatives and magazines and forums), but shoes were never talked about except in the sense of fitting an outfit and occasion.
I have also read some say that ballet flats are "unattractive" or "men repellers" and I don't give a single fck and they are widely worn by French women (and women of all kinds of nations and backgrounds).
At the same time men have commented on some shoes being "repelling", but generally I agreed with most of it, like all those trendy shoes that are worn for a bit and then never again, like spikes and studs and plateaus. You'll also always find a guy who'll say these shoes are hot, like some men love women wearing ballet flats.
I fall in the category of not giving a fck, because the shoes I wear have to be stylish (to my taste), but foremost they have to be comfy. I'd never squeeze my feet in shoes that have me nearly crippled with pain or that I couldn't really walk in, regardless how hot they looked and regardless how crazy men were to be about them.