VR is about moving forward , backward, sideways etc.
This is what is all about and what wireless headsets and devices are also directing vr toward.
Treadmillers as locomotion , put a chain and a limitation on the above, so it is not a solution to the whole problem, just an option to do certain things that creates limitations in others .
The sidewalk movements are not just related to the sidewalk dancing . There are sidewalk moventes in many games that unfortunately katwalk or any other treadmill, do not allow.
I posted my dancing video as an example of how that katwalk dancing video is laughable when thinking at all the other movements that can not be achieved in dancing or playing using kat walk , that are also common in games