People can say anything about things like "dimensionality" and "Model A", but they've never even been tested and those concepts and its definitions are highly vague and broad and abstract and things like "dimensionality" may just as well be meaningless.
There are some other theories that can explain our cognition, such as the Dual process theory, the "System 1 and System 2" kind of thinking, and it seems to be backed up by many evidence, at least. It's not perfect of course, like with any theories it is still in the process of refinement, but it's gaining traction and is applied in multiple disciplines.
So people on here can armchair philosophize and psychologize all they want, but it will likely not create anything substantial.
Yeah, I think he's just basically plagiarizing and saying, "This fits in with Socionics, that fits in with Socionics".