I get the impression that it cannot ride on its side since the vertical dimension is hardest to accommodate in most vehicles.
No personal experience, but my understanding is that a half-ton truck can ride like a car while three-quarter and one-ton are much rougher.
Emphasis added.
As the market for 1500-class trucks is families - who in previous years would buy minivans, station wagons, sedans - this is a market expectation now.
Regrettably, it cannot be (easily/feasibly) turned on its side.
But that’s a great observation!
Personal observation is that people have become accustomed to “rides like a truck” being “normal”. 1/2 ton class still ride like trucks, for the most part, and I personally am not a fan. SUV forms make them a little better, presumably for the weight distribution. But there’s reasons I don’t really do trucks unless I need one (nothing can beat a 8’ full size pickup bed for hauling sheet goods - but I still don’t like riding in it!).
Plenty of personal experience, and trucks are always long wheel base, frame-heavy vehicles with leaf springs and live axles (very, very rare exceptions). They handle poorly, drive poorly, and ride poorly. But some people like them. And some of those people might be members of my party.
Which is not to say today’s trucks don’t ride better than those from <2000ish (when Ford moved from the I-beams in 1997, it was clearly all over for the 1/2 ton truck being something other than “the new mini van”). They do. But they’re not cars.
There’s reasons CUVs have some on so strong, and SUVs before them, and minivans before that. I think minvans would be better if the manufacturers spent more time & money making them better - they dump all their dev $ into the higher-margin CUV, SUV, and pickup truck segments. That’s why the seats in them feel cheap and thin and the interiors are poorly configured.
I get the rather distant impression that the interiors of minivans are what they are because of the target audience and the need to be child/family resistant and not too expensive to replace when they fall to the collective abuse.
Dodge switched to rear coil springs a number of years ago. That does present 2 problems though.
Number 1, it’s a Dodge. 
Number 2, Death wobble depending on which version you get.
For what it’s worth, my most recent 3 dailies are, in reverse order:
Ergo my definition of a comfortable ride is perhaps not in line with everyone else’s. Although all of those rode notably better than the 1996 F150 I once owned, but a previous owner gave it a somewhat jank lift (axle spacers against the leaf springs in the rear, coilspring spacers in the front).