In all seriousness though, the only real drawback is it a minimal additional cost for end users that never plan to use the threaded barrel, well that and it doesn't look as purdy.
The threaded muzzle on the Montana added $50 to the cost of the rifle which is very reasonable considering that it would cost a lot more than that to have threads added after the fact. The 7/16-28 threads allow the use of the standard Kimber muzzle brakes that ship with the Mountain Ascent rifles and blend nicely into the barrel profile. The threads also give the impression that a suppressor can be screwed on regardless of whether or not that's a good idea. Personally I don't like the threaded muzzle due to the limited amount of material in the barrel and the potential effect on accuracy/precision, particularly as the bore approaches .30 cal. The 5/8-24 threads on the 300 Blackout Adirondack made more sense with a functional but ugly looking barrel profile.
