If you read his post carefully, you'll notice he is actually asking if the suppposed non-interactivity between magnets also extends to antennas. Receiver antennas with certain orientations relative to the transmitter antenna certainly do pick up a weaker signal. Assuming simple dipole antennas, the receiver antennas not parallel to the transmitter antenna will receive have a weaker. I am not sure whether their signal strength is the same though or different depending on whether they are pointing radially or tangentially to the imaginary circle around the transmitter antenna.
But I've never heard the same thing about the magnet because my understanding is that the lines of magnet flux will move to connect the poles between magnets.