If you argue that a type change occurs in this phenomenon, then all this really goes to prove is that the only way that type could change would be a massive restructuring of perception and personality. It says absolutely shit about the possibility of such a phenomenon in psychologically "healthy" individuals. We already know that the brain has the capacity to actively use all of the functions, so arguing that this has bearing on the possibility of type changing actually being possible in the brain of your average Joe is laughably redundant.