I personally don't see it as all that clear cut. I see Socionics as providing a model, and to use the model requires reductionism. The point is then to expand it back out after one feels they understand it well enough, to allow back in the true spectrum of humanity that doesn't easily fall into these limiting categories (good luck). It's like when you first learn about derivatives in math and at first they start with the clunky breakdown, before you learn how just use equations. The clunky breakdown is just a means to jog the mind into understanding something that transcends the clunky breakdown.