Do you have any data to support this is actually the case? I see this all the time but absolutely zero evidence but a 2015 Axios survey with no methodology or dataset. Nearly every article cites this one industry group with 3 questions that clearly aren't exclusive categorical and could be picked apart by a high school student.
I ask this question nearly every time I see this comment and in 5 years I have not found a single person who can actually cite where this came from or a complete explanation of even hope they got to that conclusion.
The truck owners I know, myself included, use them all the time for towing and like the added utility having the bed as as secondary feature.