What causes death wobble in the Jeep Wrangler JL?

Let's explain what causes death wobble in the 2019 Jeep Wrangler Rubicon JL and other JL Wrangler models. The Jeep Wrangler JL is very prominent for death wobble and we can explain why and what to do to fix it. There are other problems with lifted Jeep Wranglers etc. but lets understand the inherent flaw of the JL steering and suspension. If you've been to the dealer 10 times and are sick of band aid repairs this will give you your answer. Some fixes will be done under warranty but not everyone. There has not been a recall yet.