One might argue that ID cards actually preserve privacy. In order to give some company or person proof of my identity, I just have to show them my ID card. This transfers less personal information to them than a driver's license, birth certificate, etc. State-issued ID cards are usually much harder to falsify than those, too. Therfore, rarely something else beside them is needed for identification. Therefore, identity theft is more or less a non-issue in Germany.
He seems to be happy with the police having access to everyones id card data and appearing to have no oversite to see if the Police are abusing the power of asking people to present your id card or "papers please".