The Folkin Hoe is Brilliant

I just watched the video and every home in North Carolina should have one! The wisteria here is breathtaking and deadly. It can consume a 40' tree in a season. It has already covered my fence along the driveway and snatched my ponytail this afternoon almost knocking me off my feet. I spend many hours each year with the trimmers keeping it in check. The Fokin looks like it would do the job in a fraction of the time. Not to mention using it to wack the vines out of the trees. I looked out at my kitchen garden this morning and realized the wisteria has already engulfed the two 12' tall  Mulberry trees! Rescuing them will take an afternoon, the step ladder and several cutting tools. My fractured knee is not looking forward to going up and down on the ladder. If I had a Fokin I could knock it out in an hour. Might need to call the kids and tell them I need a late Mothers day gift...

Does it hurt the tress if you just leave it in them?  It seems like you could cut it off at the ground and just leave the dead pieces.  My disclaimer is that we don't have it here, so I'm basing that on climbing things here that I do that with, like wild grape.