My issue with “flying saucers” is that the disk shape doesn’t make for a very good aircraft. The only ones that might have ever performed decently were the Chance-Vought “Flying Flapjacks” and they weren’t really saucer shaped. Too bad the gear box wouldn’t work.
My relative who saw them in his job routinely says your assertions are wholesale, grossly, totally
WRONG
in terms of the technologies involved.
In terms of using conventional technologies with a disk shaped craft, you are more correct.