Or literally just know your weight (approximately is ok) and know how to read a tire pressure chart.
It’s one thing for someone who understands absolutely nothing about vehicles to drive a little car around. It’s another if you’re responsible for operating a large vehicle.
Just because the govt doesn’t mandate training or licensing to try to ensure operators aren’t totally ignorant to the basics isn’t an excuse for not being knowledgeable enough to do basic pre trip inspections and have basic knowledge about particularly safety items like tire pressure.