Bump stops are not load-bearing. They only exist to prevent your suspension from bottoming out and while Timbren is pretty much the gold standard, they aren't intended to be used on the regular. Even something like air bumps that are designed to be used regularly aren't intended to make up for poor suspension setups - they're intended to level out the exceptional large bumps on trail that would otherwise be aggressive using a rubber bump stop.
If you are worried about weight, you either need airbags or stiffer springs. The payload of a Jeep is not great so setting the Jeep up with stiff springs as if it drives around at GVWR all the time should not be too harsh for a daily driver. If you're running around much higher than that, it's time to look into a larger vehicle.
I personally avoid airbags off road because one good unexpected drop is all it can take to pop one and leave you in a bad spot on trail. They make sense for a road truck that can vary its load by 1,000-1,500lbs but not on a Jeep.