$0.02/TLDR: Maverick has a use case for urban-dwellers who want a truck for basic hauling/VERY light towing.
I do a lot of work renovating our (old) houses before we sell, and want a truck bed for dump trips and other activities that beat the shit out of the truck bed. I've usually lived in east coast/midwest cities that were built up a long time ago for America. It's common for street parking to be a battle to the death, so we typically try to have a garage. Many/most garages from pre-1910 or so are 20x20 or 20x10, were often used for horsed (rather than horseless) carriages, and can't fit a vehicle much larger than 200" once you account for the garage's framing and garage door(s).
In our last house, I was able to extend the garage about 2 feet to the property line (alley access), so I bought a newer GMC Canyon and had room for four. In our current house, I have about 209" of space and bought a 2017 GMC Sierra Rrgular Cab Short Bed (205.6"!) and it's basically going full-on mechanical centipede with my garage door and wall.
Oh, and GM quit making Reg Cab short beds except in Mexico/overseas, Ford's is too long because of that notch behind the seats, and Ram only sells the janky Ram "Classic," so it's used for me if I want full-size, and impossible for mid-size because none of them are <205" or so, even the Ridgeline.
If the Maverick has decent payload and a bed where I can strap down 8' or 10' lumber just fine, I'd be all about it even if it's not body-on-frame. The XJ Cherokee was fine as a unibody and the warrantied stats for the Ridgeline are fine, so I'm hopeful it doesn't just turn out like a Subaru Baja or El Camino, but more like a smaller version of the new Ridgeline.
Gotta be more people like me out there who want it for a use case like mine, or even just to be easier to parallel park, if the general trend toward urbanization I've been reading about is even half true.