It is obviously excellent practice to fly at near stall speeds and to keep the wings level with the use of rudder while doing so.
If anything it teaches people to unlearn the reflex to pick a wing up with aileron.
However when teaching people to recover from the incipient spin; and that is what it is all about if we are teaching people to fly through the skies safely; is to hammer home to them that the first thing to do when getting the tell tale signs of a stall is to unload the aeroplane!
Stick forward.
At the end of the day that is what will save your bacon. Nowt else.
You can be an ace at spinrecovery etc etc etc, but if you spin it in on the turn to final which typically would happen between 400 to 600 foot you will be dead as a dodo in the majority of cases.
No matter how nifty your footwork.
FD