My dad drives cross country. According to him, most truckers are absolutely the dipshit slobs they are stereotyped to be.

My wife is a PA who's worked in primary and urgent care for 13 years. Until the pandemic, the only patients who would threaten her life are CDL exams. She's been threatened, stalked, assaulted, had to get a restraining order, and has had two would-be active shooters who were caught by the cops on the way to the clinic, armed to the teeth. All truckers who failed their CDL physicals.

Not all truckers are dumb, just most of them. It's shitty enough work and life that the smart ones leave.