Even a private noncommercial vehicle cannot go past CDL weights unless it's an RV, right? So if my neighbor has an F350 and wants to use my 14K dump trailer to get some soil for his yard, I think technically he needs CDL.
I've got no problem with keeping us safe by expecting drivers of heavy vehicles have different qualifications. I just think some of the requirements are not where they need to be and I don't think it should take $5000 and a week or two of labor to get there. Not like there were mass casualties caused by untrained drivers 4 years ago.