Without going into small details, I think the people critical of Mark's position are pissing into the wind -- just from the responses here, it seems that a fairly large set of people (though perhaps not a majority) feel that cameras are getting too cluttered up with options, buttons, menus, etc. So even if *you* don't think this is a problem, apparently a large number of other people do.
This has no direct application to cameras (or maybe a small one) but complication, like new features, new processes, etc., always causes problems for a good set of new users of the product -- always has a price. You have to decide whether those features are worthwhile, if you are actually given the power to decide that. But in some cases, you are not really given a choice. For example, I had to download the new Mavericks OS from Apple (not because I wanted it -- I was perfectly happy and familiar with OSX 10.6.8 ) because I wanted to download the Photoshop CC and Lightroom 5 offer, not because I particularly needed them, though it seemed like an okay deal (I already had an updated Lightroom 4.4 which was good enough for me) but OSX10.6.8 won't load Lightroom 5. I needed Lightroom 5 because I'd just bought a Panny GX7 and Lightroom 4.4 doesn't support the GX7 raw files. In other words, one decision, to buy the GX7, meant I had to upgrade my Lightroom program, which meant I had to upgrade the OS. So far, this has taken several hours of my time, for, essentially, almost no improvement. In fact, I've been having trouble with Mavericks, and when I went to the support forum, I found that there are some 5,000+ discussions going on, involving Mavericks problems...all kinds of compatibility issues and complaints...for an OS that's been out for less than a week. Every time I open a website in Mavericks, now, I get a warning that I need to choose something for a URL, which I really don't need to do. But it seems there's no way to stop the warning pop-up, which needs to be responded to before you can read the website. I've now hit "cancel" probably 500 times, and so far, I'm not getting any help on the issue from Apple. I am also going to have to find some kind of documentation of the new features in Mavericks, because even though I don't see any *improvements* in the features I use, there have been *changes,* and just to get back where I was last week, I have to spend time learning how to use the changes I didn't want.
Just an example of why people don't need unnecessary complication. If Adobe had simply upgraded 4.4 so I could read the GX7 raw files (which they could have easily done, since LR5 supports it) I'd be happily back in 10.6.8 and would have several hours of my life back.