"So you are one of those whos feet leaves the floor, going backward or forward."
No! I did not say that at all.
Apparently you studied at the George Bush school of diplomacy.
I don't share your obsession with the altitude of the moving foot, but absent any reason to raise it (and there usually is none) I would not recommend doing so. On the other hand, if there is a reason to raise it (such as unsuitable shoes and/or floor) I can do so with no real disruption.
"By the way you write it would seem you are using momentum to keep you upright."
Yes, that is how humans have been walking every since our ancestors left the trees. You can deny it until you are blue in the face, but you will not change SIMPLE FACTS KNOWN TO ANYONE WHO HAS MADE A SCIENTIFIC STUDY OF HUMAN MOVEMENT.
"If you have no contact with the floor with your moving foot your foot will move too quickly."
On the contrary, if it is only contact with the floor that keeps your moving foot from moving too quickly then THERE IS SOMETHING SERIOUSLY WRONG WITH YOUR MOVEMENT. If your movement were well aimed and efficient, there would be no need for a braking drag from that foot - that you need it is proof that your movement is MISAIMED and INEFFICIENT. Now that's fine for a beginner, but you sure give the impression that you've been dancing long enough to have moved years beyond that stage!
"I've tried to pin you down on this one without success. Do you believe that the person moving backwards has pressure on both feet as they move."
Of course not!
"Are both feet in contact with the floor."
Yes, unless there is a good reason for one not to be. Unecessarily lifting a foot is wasteful - but if it becomes necessary due to a bad floor/shoe situation, it would not change anything on a skilled and coordinated dancer.
"Also please explain what you meant when you wrote. The mistaken argument of mid stride. Which has everything to do with foot pressure."
You would not be able to get to your alleged mid-stride position (which is a mistake), or mine either (which is proper) without either
1) going of balance (the proper way
or
2) sliding a lot of your weight on the moving foot in order to stay balanced (the improper way, very limiting, and will cause you to trip if someone changes the floor wax)
or
3) stopping your body over your standing foot until after your moving foot has been placed. Talk about silly walks!!