This system also prevents crossed transmissions by inhibiting your ability to transmit should you begin to key the transmit button and another station is transmitting.
That's not exactly the greatest thing in about half the destinations we fly to. Might makes right and the stronger radio wins
Years ago, I remember a stuck mike in one of our rental cessna's...starting with the take off call and ending with the engine shut off about an hour later. In between was an endless flow of F@#% this and F@#$5 that you effin useless F@#$...we all waited for this guy to pull in....only to find that he was in the cockpit by himself. That was his pep talk. Go figure