compare these 2 high heeled sandals:

the ankle strap on the white model seems like a good choice: it's low enough for the feet to slide in and wont touch the leg, meaning nothing constrains the ankle's rotation.

the red model seems like an odd choice: won't it make it ankle rotation more cumbersome? It would be more logical to attach the ankle strap to the foot and not the leg. Or am I missing something?

It also looks strange, having an ankle strap so high. Why would the designer attach the strap right at the end of the slingback and not in the middle, like in the white model?