My understanding from the talk was that there was no security in most places so you could take most of anything you wanted. And that the government was not much interested in accounting for, and storing, and inventorying tons and tons of equipment that was no longer needed for anything, would soon be obsolete, and maybe still didn't work good.
I know even long after the war of purchasing things left over for $1. They just wanted to get rid of it.
The one written account, and published that I know of is Andy Rooney, in his book, about his WWII experience. He took his jeep with him. No one said anything, or cared, as they did not want to inventory, account for, ship back, etc a jeep that they could not then sell. Other than for $6. It wasn't worth it to the government.