Why is the guy an idiot for picking the truck he wants and asking if a trailer way smaller than the max rating of the truck would be a good fit for the truck? In my opinion, the idiots are the ones that insist he should buy the biggest trailer possible then buy a massive truck to tow it.
I have always preferred a one ton over a 3/4 ton just for the extra capacity just as you prefer a dually to tow a trailer that could easily be towed by any 3/4 or 1 ton on the market today. It is called a preference and it doesn't automatically make you an idiot just because you don't agree with somebody else that is not technically wrong.