What do you suppose the anthropologists will deduce when they dig up these?
We have to remember that the emergence of this type of footwear (some scholars speculate this is earwear, viz. related papers) was roughly coincident with popular alarm regarding the imminent elevation of sea levels by dissolution of polar ice packs - a phenomenon known at the time as "global warming".
The likelihood is that residents of the more affluent continents who were financially able to acquire varietal footwear derived subconscious comfort from awareness of their feet raised above flood level - a comfort which illogically predominated over conscious awareness of mobility.
We can only speculate about how early 21st century humans may have walked on these excessively high, excessively homogeneous, platforms. Imagining their gait is both puzzling and amusing.
Given the overwhelming presence of internal-combustion gas-powered vehicles -the very objects which contributed to "global warming"- it remains probable that early 21st century humans walked as little as possible, on platforms or on any other surface.