Yes, but the essence of science is that it corrects itself.This is how proto-science (that of Freud and Jung) turns into real science. Hanginging on to proto-science in the face of newer and better understandings and explanation, will result in pseudo-science. 500 years ago people believe the Earth was flat, but fortunately, most of us have moved beyond that. Perhaps that in the future, new methods of looking at reality will develop and we will no longer consider the Earth a globe...
Ask many psychologists, and they say any kind of alteration in your behavior might work, e.g. going for a mountain climbing trip. To me, the question here is not of Socionics helps people, but if it is a model that explains and predicts phenomena. The zodiac predicts nothing and everything (because it's Forer effect), Socionics, although not perfect, actually does quite a good job. This makes perfect sense, as (and I've stated this before) Socionics is not fundamentally in conflict with mainstream personality psychology. We use different wording to describe the same phenomena. ETA: this makes Socionics quite a decent proto-science, where to Zodiac hasn't changed in 2000 years, which should be enough evidence that it is pseudo-science.