I presume you are thinking exclusively of men in sedentary occupations.
The whole point of high heels is to necessitate a sedentary occupation for the wearer of them. The fact that they are arousing is merely the result of cultural conditioning. Steatopygia does the trick in some places. Flat noses.
In fact steatopygia was imitated in high society for a time with the bustle. The fashion didn't last once some wit remarked that they looked like they had their pants full.
If high heels vanish for a similar reason it will not be long before women are on road mending gangs, trawlers, power-line reconnection teams and playing football.
I do believe that women who seek equality with men must be unhinged.