The fact that he can’t explain how the drive works in plain English but has to dance around it with technobabble as “new fundamental force” and “electrostatic pressures” automatically makes me think this is a con.
Also the use of the word “drive” and not “engine”.
If anything it sounds like they’re electrifying a plate of some sort and getting it to vibrate in harmonics which would give it a certain “lift” but I doubt would never get any amount of weight nothing more than a few mm off the ground.
“ If you can't explain it simply, you don't understand it well enough.”
Albert Einstein