I think it's an excellent idea for restaurants to be required to wash their dishes, in fact I often choose my neighborhood diner because they wash their dishes voluntarily, but I can't imagine what makes the city think they have the right to order restauranters (the owners of private property) comply.
Oh, I don’t think it’s all that voluntary. They have to wash their dishes or they’ll be shut down. Conservatism is not anarchy. No sane individual wants to make maintaining sanitary conditions in restaurants voluntary.
Communicable diseases are a public health concern. My voluntary dietary choices are not (although the Marxists on the Left are doing their best to make personal choices into public concerns).
Nice try at equivalency, but no dice.