The theory was formulated in the 1960s and 1970s as new information was obtained about the nature of the ocean floor, Earth's ancient magnetism, the distribution of volcanoes and earthquakes, the flow of heat from Earth's interior, and the worldwide distribution of plant and animal fossils.
The fact is loose control arm or track bar bushings can contribute to death wobble. Bent, or loose bolts, wallowed out mounting holes, and bent control arms can also contribute to your Jeep catching the shakes. To prevent this, keep an eye on your control arms and track bar.
But just as mud holes abuse the track structure it does so to the railhead as well. Crushed heads can occur in defective rails, but corrugation is more likely to occur. Just as traveling down a muddy gravel road in an automobile with cause washboarding of the road surface, corrugation is the same with railroading.