My experience with the so called death wobble, was in older 4x4's, and it typically was brought on going too fast over rough RR crossings.
Just slowing down would make the wobble quit. Steering shock dampers have been OE for many years and pretty much eliminated the problem.
Extra big tires and lifts, and even mud buildup in rims can contribute to the wobble.
I doubt the OP's 2011 Ram would would be one to worry about. I'm confidant my 08 is safe, and yes I'd buy another Ram because I don't care for the others.