Comment by Zibulon

Sounds to me that the real issue is either mission creep, or a bad programmer/designer who doesn't see that the "generic" piece of code now needs to be split into components? In my practice, an issue that comes back often and seems to be related though, is trying to anticipate future use cases. Maybe a failure to anticipate reasonable future use cases is what leads to the mess: the first solution is not "generic" enough, and therefore more and more options are added as new use cases are discovered. But I find it hard to balance future use cases and immediate requirements.