Yeah I really don't get it.
I drive an old pickup truck with a standard sized bed. Every time I've needed the bed of the truck, I've needed it to be as big as it is. If it was as short as modern truck beds I'd be making more trips or hiring a U-Haul or something.
I get a normal, functional bed AND it's still a normally sized vehicle that's easy to drive and park. When this vehicle eats shit, whoever makes a normal sized pickup is getting my money.