This is true. I did not mean to say that just because I think it is wrong, that it is. However, the claim seemed to be that the images experienced by the brain are fully synthesized by the brain. Which seemed off.
Again, just because it seems off to be does not mean it is wrong. Not my field, and whatnot. I can even see something to be said for visual processing going in stages such that the stage that you are cognizant of is effectively on images constructed by you. That seems to be a different claim, though.
That doesn't rule out the possibility of grammar-like processing in visual areas.