MarcK - "at altitude"
Says it all - you obviously missed what I said before. I don't carry out final approaches at altitude, and neither do I necessarily explore slow flight and the incipient stall at altitude.
I teach Met at ATPL level.
My suggestion was that a potential reason for why some people are told to stall into wind is because of this. The fact that in training, we tend to operate at higher altitudes doesn't mean that everyone in the world carries out stalling at 5000'. The last time I looked at a stall (not in training) I was at 1500', lowest was at 800'.
It's clear that everyone has their own way of carrying out stalls, and of teaching them too. The fact that some people insist on stalling into wind doesn't make the lesson any less valid, does it?