No, they’re saying regardless of if the signal was encrypted or whatever format it was in, anyone with a directional antenna could triangulate where the signal was coming from. If there were only a repeater on the moon that NASA was transmitting to that was then sending the signal back, that would also have been able to be determined.

Both the Russians, who had a vested interest in embarrassing the US, and every other amateur and professional radio operator on the planet agreed that the moon landing was being transmitted from the moon.