that's because most people, including myself, won't allow an inspector to even sit on our bikes.I haven’t seen a “brake test” on any of my motorcycles in years. For the truck and wife’s car, the last couple of years it’s lights, wiper blades, and tire tread as well as proof of insurance.
It takes more time to do the paperwork than the actual inspection.
I did have one once have me perform a brake test while he watched, but usually they don't even check the tire tread depth on my bike.