"Learning to fly properly" and learning to fly on a C 172 is not mutually exclusive......
That is basically true, however learning to fly a Cub will instill hands and feet coordination taking off and landing that will be more beneficial than learning on the 172....or have I got this all wrong?
From the learning factors is it not understood that teaching it right the first time is best?
Or to put it another way.
You have ten students, five you take to solo in a 172 and the other five you take to solo in a 172.
Immediately after their first solo you have them switch airplanes with no further training and go solo again.
How would that work out?