Why are commercial drivers often overtime exempt?

I don’t understand this. It is one of many reasons commercial driving is such a dog shit job these days. I have my class a cdl but these clowns think they are funny if they think it’s coming out of my wallet for their meager offerings. They do these guys so wrong, like celadon when they shut off the gas cards and left these guys stranded. Baby, I’ll sell your truck tires to buy a plane ticket home. Don’t think I won’t. https://www.dol.gov/agencies/whd/fact-sheets/19-flsa-motor-carrier