I am guessing that what GP meant was that some people have started thinking of the brain not as a theoretical computer (i.e. as something that can be modeled as a Turing machine or lambda calculus etc), but as a microprocessor. The compational nature of the brain is a pretty wide held belief (though not universal), one that I for one hold.

However, starting to think of the brain as if it should resemble the organization of a microprocessor, with 'ALUs', working memory, well-defined boundaries etc are definitely wrong, and a misapplication of the notion of Turing equivalence. It is nevertheless somewhat common, especially in popculture.