I saw that inspection and it was obviously an arranged demo of what a state inspector does on a Semi Truck. Surely you've seen them on the side of the road inspecting a semi they pulled over, usually with a portable scale too.
Not something they do on RV's. Tho I could see it happening on an obviously and visibly defective RV in very rare occasions
Anyway we have a safe under the bed and keep vaious paperwork in that. If you get one make sure it's not one that can be opened by jamming a Bic pen barrel in the lock.