They make the point about clearance of IFS up front bc no pumpkin to avoid on rocks... but there's a pumpkin in the back square in the middle like every other truck so doesn't really matter.
And with the IFS it looks like it's sagging into some divots more than solid will permit leading to extra belly rubbing anyways. Straight fire road or small stuff sure, no pumpkin and comfier, but bigger stuff and you can lose the benefit bc the nature of solid axles helps keep the vehicle up more to avoid dragging.