The problem with elevator shoes is the bulk, they look like shoes for someone with swollen feet. Have someone take a picture of you wearing them from a distance and you will see, it's also why they avoid photographing from the side profile. Imagine trying to hide a wedge in your insole, there is just no way without making it stand out. Elevator shoe makers also pair it with higher heel and the whole proportions end up looking strange.
The other problem is the advertised height is no where near the true height. For example if they say 7cm, then when you minus the 2cm you would get from a normal shoe you have 5cm, but because of body weight the foam squashes down to 3cm and over time it will be less. Buy any elevator shoe and measure your height compared to your normal shoe and you'll find that you only get 2-3cm. The extra option is to add extra wedge in the elevator shoe but then you will trip and bend your ankle occasionally because of the heel angle just like women wearing high heels, it's also a huge giveaway.