Heres how a sway bar can lift a tire under the right circumstances.
What a sway bar does is tie the left and right wheels together and resist letting one move up or down without bringing the other one with it.
Let’s say you have a stiff sway bar up front, and the rear suspension flexes - the camper leans to one side. That twisting of the whole truck also goes to the front. If the whole truck tilts and the front wheels are tied together by a stiff enough sway bar, the high side tire can be lifted.
Maybe not entirely off the ground but a lot of weight can be taken off of it. At some extreme point it could be off the ground.
This is all extreme-circumstance stuff. I’m just ‘splainin’ the principle.