Is it worth to buy a Runn smart treadmill sensor NPE Run for physiologists?

The NPE Run seems to be constructed, as if it is based on fellnrs treadmill calibration: https://fellrnr.com/wiki/Treadmill_Calibration copied from there, not declared, and made a 100 USD product out of it? And then, Ray tests it for fun and in his spare time over the weekend with no numerical and statistical data: So we have …