Not a useful argument; anyone making the "nothing to hide" argument is implicitly arguing the trustworthiness (or the low likelihood of a mistake impacting them) of the state/justice system. You and other members of the general public are not part of that.
This is also why the snippy "so you don't have (locks on your doors/blinds on your windows/etc.)?" comeback does not work.
"Officer" is indeed a subclass of "Person", but the former includes a StateAuthority mixin that modifies its acceptable and expected behavior in a number of ways that make it unreasonable to blindly substitute one for the other.