This is the kind of thing that “makes sense and agrees with my beliefs” to his audience - people who don’t fly. His party hammers down on flyover state residents to make them think people in planes are snobs. This keeps them from flying. This keeps them from traveling. This promotes the local echo chambers throwing snowballs at the other side’s forts. This is by design.
Fox says a thing as an opinion. Trump says the same thing as a statement because Fox viewers don’t know fact from opinion (or from “satire”, legally). Fox says Trump said the thing as a fact, so it must be fact. This is a feedback loop. This is by design.