There's nothing wrong with AbstractFactoryFactoryInterface if that's what you end up with after carefully evolving a design, driven by actual requirements. The

There's nothing wrong with AbstractFactoryFactoryInterface if that's what you end up with after carefully evolving a design, driven by actual requirements. The problem is that the people who come up with these designs are the ones that consider refactoring bad/hard/risky. They know very well that they need a hammer, but 200 what ifs later, they have this monster-factory, instead of just getting a bloody hammer, then, when they also happen to have a screwdriver and a saw, they build a toolshed, and refactor.