^Hmm I was thinking the same thing aboveaverage. To reduce turkey neck you need to increase the amount of shaft skin you have; I don’t see how having more scrotal skin would impact this.
Stretching the skin of your scrotum will make your balls hang lower; stretching the skin between your circumcision scar line and the place where your scrotum connects to the underside of your shaft will reduce your turkey neck.
Such is my understanding at least.