Ok. I just looked at that puppy and it may actually work, but a frame is nothing but a series of vibrating nodes summed into one vibrating super node that transmits shock waves through the handle into the hand and up the arm. That device by Bablolat is, I assume, dampening string vibration entering the frame, or attempting to. To dampen the whole frame with that device is not, I think, possible. It is possible that it actually does SOME dampening, which might help TE, so I'm quizzical but unconvinced.
I will defer to the real physicists on board as it's been over 40 years since I got my physics degree and have never used it.