Van's aren't sexy and cool, and there is no marketing as TOUGH and REAL MEN and COUNTRY MUSIC the way there is for trucks.

The bourgeoning Van Life movement that is picking up steam on places like TikTok and YT may do more for that, but in a lot of ways it's a statement about doing without, as opposed to being country rich and tough the way trucks are.

You are forgetting "soccer moms". For some dumb reason America decided there were two genders "masculine" trucks and "feminine" vans. It still makes no sense, but it certainly seemed to sell a lot of trucks to misogynists.