It depends on the degree of deformity. I would assume anything described as a turkey neck is a significant amount of looseness. Without photos it’s hard to tell. Any significant amount of looseness is better treated with a facelift.its best to go for a personal consultation.
The concept of that and other non invasive neck tightening procedures is that the machine will create some heat that will shrink the skin. It won't work on any but the most minimal amount of loosening. If you have jowling and sagging you'll probably need surgery. But that actually works! There is no magic way to avoid it, so go for the gold standard.