This feels more like a political statement than a researched perspective. Is there proof that the F-150 of perhaps 2007 is smaller than that or 2012? Did the truck sizes change to become smaller once the emissions rule was revoked?
One of the big differences between pickups like the F-150 of the mid 2000's and now, is almost every truck now is a 4-door. Back then, they were 'extended cab' trucks with a very, very small bench in the back. And then for a few years (up till around 2006 or 07, they were uncommon, but had a small set of doors for the back seat (sometimes opening backwards so there was no pillar between, giving more room to climb in)