My current 2017 Acura RDX vs my first car, a 1971 Olds Cutlass.
Love the Cutlass, but it rusted, got 16 mpg, was worn out around 125k, had weak drum brakes, handled vs today's cars rather squirrelly, was heavy, had to put in a new AC compressor from the junk yard, paint faded, etc. No air bags, no ABS, no shoulder harness.
So to be fair, today's cars / trucks do have a lot going for them. My Acura is at 100k and barely broken in. ABS, shoulder straps and airbags of course, much safter in a collision, no rust, paint is still good, 20 something MPG, can cruise all day at 80 mph rock solid, etc. It has had it's issues - 3 of the four door lock actuators went bad, had a trans torque lock up had to be replaced (supposed to be under extended warranty, but denied because the computer did have a fault code even though it didn't work - go figure).
All in all, I do think we've passed the point of diminishing returns on adding things that drive the price up.