I think it is silly to say that sanitation and health inspections are unnecessary.
They are unnecessary. They're incredibly useful and prevent many illnesses some of which could be fatal, but if I was dying of dehydration, I'd drink water regardless of what it was tainted with - Similar for food. The WHO can give you stats on malnutrition/starvation around the world. This is NYC, where many people eat very well and many people eat what others throw away. If I go to a restaurant, I expect to be served sanitary food (usually - unless I intentionally walk into some dive where it could damned well be stray cat meat, but I at least know ahead of time what to expect.)
This is really just presenting a method for maintaining some kind of level metric for those inspections. So whatever standard these restaurants are being held to is based on what they're actually doing rather than bribes/negligent inspectors/etc. So, when I go in, I know whether I'm getting properly prepared food-stuffs or something that may or may not send me to the ICU.