A lot more Trumpers are well-off or at least comfortably middle class than you might think. They're the ones buying $50,000 pickup trucks that they only use to drive to the supermarket and church, after all.
And for those below that income bracket, there's always the ever-growing supply of used ones from all the people who bought them purely for the sake of virtue signaling and now need a new way to do that, and the prices on those keep dropping.