OK, I agree to simulate moon's gravity the film must be slowed down according to (1.67/9.81)1/2. So we have to slow the Apollo film from 30 fps to 12.3 fps. Is this the starting point?
Why not create a new thread for this, as it has nothing to do with flag motions?
The MLH theory I've heard involves 144 FPS source frame rate, and an Optical printer. I believe the technique is described by an anonymous contributor, in a production called "Smoke & Mirrors". Have you seen it?
This specific aspect of MLH is not one I've studied in detail. If you think it's something to debunk, start a thread, and you can debunk it there.