DC, have you driven older trucks at all, ever? If not, and because you've never driven an EB before, I have to think that you're going to think that it has excessive amounts of body roll and squat and dive and feels unsafe at any speed.

Until you get used to it and realize you're not going to die. Immediately at least...
That's all because, as an old-school utility vehicle (before the "sport" was added) it really does have more roll than a modern vehicle.
Most all of which have anti-swaybars by the way.
But I would venture a guess that too, 90% of Early Broncos out there on the road today still do not have a single anti-swaybar added. And are driving along just fine for their owners.
Shorter wheelbase than most cars, higher center of gravity than most cars. Less equal balance than most cars. Stiffer springs to help keep it safe AND carry extra loads than most cars were intended to carry. All of those things add up!
And softening the springs to make a more favorable street ride does not help 100% of the categories a Bronco was designed to work in.
Many "new-to-old-trucks" owners do tend to think these things handle like doggy doo-doo anyway.
Older guys, or those of any age that had introductions to old trucks at an early age probably think nothing of it. In fact, they probably think, correctly, that a standard EB handles pretty well for an old truck. Because they do...
Paul