I've owned 3 80s and still own my 93 model. We sold the 96 to our daughter, but I still handle all its maintenance. A year ago my brother dropped off his 100 intending to perhaps come back out west and go on some offroad trips. He got busy, and bought a new Cruiser - last before the current downsized.
So he asked me to sell it, which I eventually did. I drove it around to keep the seals lubed and such, and it had around 275k if memory serves. Obviously it was newer than our 80s, which have 250 and 314k respectively. Sure, the hundy drove better, but I was disappointed at all the stuff that seemed to indicate a less robust build quality. This was his petite wife's car and was never offroaded, for perspective. Not once, and he's a pilot and extremely good at maintenance. So it should have been a creampuff.
Here's a litany from memory: The rear exterior hatch handle had broken off before it arrived here. It had some kind of water leak that caused the interior to smell moldy. The ignition tumblers failed and needed screwing with. The electronic key heads all failed (physically broke and were replaced), The exhaust manifold gaskets failed and were failing again. The steering wheel tilt/telescope broke. The A/C system developed a leak and quit working. The touch screen HVAC controls were balky, the transmission (regularly serviced) would lurch when cold, the wheel bearings were replaced (all on both my 80s are original), and it rusted badly. The buyer called me after arriving home and reported he found the frame rusted through up front and the sway bar was completely disconnected.
Granted, my 80s both got new head gaskets (an industry wide problem when the automakers were forced to remove asbestos with zero warning or time to prove new materials), I've replaced window motors, and the power locks are finicky. But they feel much more overbuilt and up to the task of offroading, or driving across country than that hundy did. Sure, I'm biased but I feel the 80's DNA is "industrial tractor" where the 100's DNA was the first step toward a mall cruiser. Not a criticism, as it remains best in class in that tasking, but a difference I perceive as a movement away from what I have - a 31 year old rig I bought new that still serves me today exactly like it did when I bought it.