If you don't know what the defect level is, how do you know when to get mad?
Eliminating what is not wanted or needed is profitable in itself.
Quality is the result of a carefully constructed cultural environment. It has to be the fabric of the organization, not part of the fabric.
Quality management is needed because nothing is simple anymore, if indeed it ever was.
When in doubt, delete it.
You are going to be measured anyway by some means, fair or foul. Usually the one doing the measuring has nothing specific in mind; so he does it by the seat of his pants. Careers are destroyed in this manner.