This is the first time I see squats taught this way.
I guess it’s just a different kind of squat that one could implement
in his training from time to time, though I agree that I would be
uneasy about the long-term implications on the lumbar area if one
were to use this method exclusively, particularly when going heavy.
Perhaps this kind of GM-Squat form comes more naturally to people
with long legs/short torsos anyway?