@Kevin557 the house rules do serve a purpose.
If a bad guest is in clear violation of the house rules, that can be used as grounds for cancellation of their stay (the kind where Airbnb takes care of cancelling and then moves the guest somewhere else).
Plus, normal polite people follow house rules. Having house rules lets those nice polite people know that they are supposed to do.
Having house rules won't prevent bad or rude guests from breaking them, any more than having laws against robbing banks stops bank robbers from robbing banks.
But having the laws does give you a mechanism for punishing bad people when they break the rules.