Like those 5 mph bumpers that cost thousands of dollars to fix?
The 5mph bumper standard was in force for one year, about 25 years ago.
Current standards are the bumper must protect the body and safety equipment (headlights) in a 2.5mph frontal crash, or a 1.5mph corner crash against a defined barrier. There is no requirement that the bumper survive that single tap.
You’d think that law was written by the body shop industry.