While it's true that better off-road vehicles handle poorly on road, the "death wobble" got nothing to do with it. If you don't tighten up your bolts and bushings, then any vehicle will make some very ludicrous attempts at driving.
While true none of the 4x4s are going to drive like a Cadillac , the design of the Jeep Wrangler's front suspension and solid axle exacerbate the problem. It gives them better articulation off-road, but makes them more susceptible to problems on-road. Not saying its wrong, just depends what you're planning to use the vehicle for.