Why the Admiral Hipper class used tonnage inefficiently

What made the Admiral Hipper class so inefficient for its tonnage?

Too many specialized systems consumed weight and support capacity that simpler general-purpose equipment could have used more efficiently.

The Admiral Hipper design is criticised for accumulating specialised systems instead of choosing equipment that could perform several jobs. Separate weapons demand different ammunition, spare parts, maintenance, and training. A general-purpose gun that is less effective at either task can still be the better choice if more of them fit and they share one support system. Those requirements affect the whole ship's use of displacement.