I've beat the chit out of some Jeeps, worn out.........and still no death wobble.

Worn steering stabilizer shock usually the culprit, or something else loose.
Loose- usually the result of a half arse lift kit install.

Esp with the kids on Jeep forums...........so much BS. Avoid the forums.
Its beyond ridiculous.

Kid I know did his XJ, got death wobble. Told him the fix. He didn't listen to me, instead listened to forums and other punks.
Weeks of this and that.

Finally does what I told him and it goes away.

But then he and his crew took 1.5 days to install the front axle and couldn't get it.
I drug my jack over and had it in less than 30 mins.