"it seems a bit odd to me that you'd demand Google 'clarify' its code of conduct to people who *aren't bound by it*"Not really. Codes of Conduct are generally available to the public and for good reason. Let's say the CoC allows employees to swear at customers. Customers then have no grounds for complaint when called a stupid cunt. OTOH is the CoC specifically forbids abusing customers in any way, then customers have grounds to complain to the employer.
NB I deliberately chose an extreme example, not a real-world one.