Maybe it's because I'm not browsing low enough, but the feel of the threads on this story seems to be along the lines of "OS X will go by the wayside, and we will be forced to program iOS apps on iOS, a platform developed for phones and tablets, or else the iOS SDK will be prohibitively expensive." I have two responses to that.
First, what happens when Apple stops selling Macs with traditional OS X in favor of the desktop progeny of iOS? Those who would not be developing for iOS anyway (shot in the dark: most Apple consumers) may or may not applaud the decision and will probably not be majorly impacted by the decision. Those who would develop or consider developing for the platform (shot in the dark: most people with negative feelings in the comment threads here) are likely faced with serious barriers to entry for development on the platform.
Has Apple traditionally been known for making it difficult to develop for their platforms? I don't know. Would they seriously consider the impact on developers for their unified desktop/phone/tablet platform before they make a decision like this? Absolutely. If developers are going to have a comparatively hard time developing for iOS, they will both do it less and do it worse.
Second, if Apple does finally stick with pushing only a desktop version of iOS and you don't like it, then there is no better time (in my book) to move away from Apple (or not move to Apple) and support a Linux distribution whose interface more closely resembles OS X. In the technology's current state, I struggle to find fault in Mac OS X proper, and iOS works pretty well on my iPod Touch. To take iOS and put it onto every new Apple desktop/laptop computer, even with serious usability tweaks to be at least something like what I would want in a desktop/laptop computer, would be a big "fuck you!" to everybody I know that does a lot of serious work on a Mac that wouldn't translate well at all into an iOS environment.
("everybody I know that does a lot of serious work on a Mac" uses their Mac because of OS X's convenient and consistent interfaces and would be using a Linux distribution otherwise.)
If you don't want iOS, and that's all that Apple is selling, then you know better than to buy it, I hope.