Any time this phrase appears in an argument it's a good indication that I can ignore the argument.
Our brains are not "wired." They are pretty malleable and adaptable, and while a lot of that happens during childhood, they do remain fairly malleable throughout life.
While there are neural structures that are specialized for certain tasks genetically, it is incredibly unlikely that the form of the book has had any significant evolutionary effect that would lead to some genetic predisposition for a book compared to some other form of conveying written information. Books have only existed for a couple thousand years, but originally were quite expensive to produce and only available to the wealthy; mass market production of books has only happened for a couple hundred years.
There are probably reasons why many people prefer physical books to e-books, but to make a claim that it's based on some kind of "wired" preference in our brains rather than practical factors like battery life, compatibility issues, screen refresh rates, or any of a number of other simple, practical explanations is a bit extreme, and would need to be backed up with some kind of evidence.
I personally don't consume much in e-book form, but the reasons are because of DRM, ecosystem lock-in, poor formatting in e-books, and the like. I actually consume a lot more content electronically than I do in dead-tree form, but it happens to be web pages and DRM-free PDFs.