... and his reply to me " i didn't go into custom functions as didn't have the space to,idea was to talk about design and using it out of the box.otherwise a review would read like an instruction manual which would be pretty boring read".
I write for magazines, and there is always a balancing act in what you write, what the editor wants, and what the people want. For the most part, the buyers of magazines are not looking for super technical pieces, they want something easy to read, and almost conversational. I fully agree with the people who are going to post "NO!!! We want full technical info and in depth real coverage!!!" The problem is that information is more often than not found on sites like this, where most people will skim over it and only a few will get involved.
This causes most reviews to be written as an overview, instead of an actual review. Combine that with the need to write about new items, and a lead time of often several months before an article is written to when it hits the stands, and you can see where the internet simply slays its print edition older siblings.
I agree that mentioning a custom function would have been better, but there ends up being a lot that a Nikon shooter isn't going to know, and a lot that a shooter new to the 1DX doesn't know as well. I blame most of that on the time constraints which are put in place for the articles.