All that democracy provides for (in this case) is that no one is above reproach or accountability. It doesn't mean that officials are sanctified and immaculate

All that democracy provides for (in this case) is that no one is above reproach or accountability. It doesn't mean that officials are sanctified and immaculate and won't work in opposition to jurisprudential values (ie, won't be corrupt). If officials couldn't be taken to account (in an functional civil court), then you can wonder about the state of the nation. The fact that New Zealand is looking into this is proof that democracy is working there.