RIVERRAT

I just got wind of this. First I have heard of it. While pruning of this nature may have some type of value. I cannot understand it being promoted as a standard practice. I have seen many trees that could not callous or heal over as quickly as they could because of dead splinters hindering the natural process. Have always beleived a properly placed cut with a saw would heal much better. But that is when you have a justified reason for making the cut with your saw in the first place. Having a hard time rapping my mind around this one? Seems a bit of a backward process to me?