My guess is that the shoes are trying to encourage walking on tip toes. If the heel is high enough that’s what’s gonna happen. But you have to get pretty darned high before that happens. Think about a pair of cowboy boots. You have to have more heel height than that before you go to toe walking. And that’s only if you have a spike heel. A wedge heel and folks weight bear through the heel which is not toe walking and does zip extra for the calf. Four inch heels have sprained many an ankle.
Skip the funky shoes. Just lurch when you walk. “Lurching” is that walk when you bounce up and down as you walk because at the end of the stance phase, you raise your heel and push up, not forwards. But don’t do it in public! Tres dorky.