You can say that about any model. Reality is complex, and sure, it doesn't have to be complicated. Every scientist from Chomksy to Bohm knows this.

You do get the point. It is the function of making communicable and increasing integration-potential the data to higher cognitive modes of thought (Folk Thought). The simpler your model, the greater the difficulty of exposing its rules to the audience. Generally, it's about "constructivistic myth-building". I'm not claiming Jung is the Law, and systems always stand in need of refactor (Quine's talk on the Ship of Theseus).

High Extraversion Programmer versus Low Openness Programmer. High Extraversion Hacker versus Low Agreeableness Architect, etc. Reductionism abounds.