I've never heard of this. And based on the research I've read and been told, you have a far greater chance of damage caused by a traditional flat collar when a dog pulls or lunges, and even more so a traditional choke chain, than anything else.
I too have been using a harness more that the Prong lately, I will still use it in certain situations, but the AKC and other similar venues has a ban on them, so I use a front clip harness for walking my lunging girl. She wears a hex-chain in the show ring, it is the only other thing that controls her as well as the prong, and the front clip harness. On a regular collar, she hits the end, stops and chokes, and continues to cough for a min or two.