Anecdotally, this is false for anyone I have talked to. They want bigger vehicles, they want to sit up high. There exists demand for bigger vehicle, whether or be to feel safer or superior.
People you are talking to only care about image, they just buy into the macho image projected by marketing.
There are many tradesmen, farmers, etc who would love to buy one of the small trucks that used to be available. They are great for tossing tools into and going to fields, work sites, etc. But trucks with that wheel base now require an efficiency level that isn't feasible. Many have resorted to using UTVs in their place where it makes sense, but those can't completely fill the gap since they aren't street legal.
But big is higher drag and higher drag is less mpg and the only way to be allowed less mpg is heavy as per EPA rules.