24 Years of flying Cessnas, never had a guy flag 'your seatbelts are out of date'....did have some guys try to pull the 'your seatbelts are rated for 1500lbs not the required 2500 lbs' or my favorite...'we can't find the load rating on your seatbelts, thus can't verify the poundage, so we will have to replace them'
This all translates into some very, very bored mechanics trying to make a buck, when more pressing items can't be found.