The Zen of Python is a loose set of guidelines for usage of the Python programming language. Two of its tenets are:
If the implementation is hard to explain, it’s a bad idea.
If the implementation is easy to explain, it may be a good idea.
Notice the asymmetry here. A hard-to-explain implementation is a bad idea, while one that is easier to explain may be a good idea. While a simple implementation design isn’t a sufficient condition, it is most certainly a necessary one.
I’ve often seen programmers, designers and other creators wear complicated implementation as a badge of honour. More often than not, this is merely a sign that they lack the competence (or the will) to further simplify it.