Is the Mac(intosh) platform dead?

I went to my local Apple Store for a Genius Bar examination about the corrupted data on my MacBook. Turns out I need to reinstall the system software and/or do the “archive and install”. While I was waiting, I’ve noticed the children’s section that as of last Friday that had iMacs were suddenly replaced with iPads.
Is Apple killing the Mac too soon? Why would they kill the Mac if they are still selling more units than the Wintel counterpart, as well as continuing to shatter record sales per quarter for the last several years?
It makes no sense. I guess this was Steve Jobs’ idea when he demoted Apple Computer in its corporate name on the same day he had announced the iPhone. (In fact my second gen MacBook was one of the last Apple products to feature the soon to be former full corporate name on the copyright section on the bottom of the notebook.)
I don’t get it. And with System 10.8 (aka Mountain Lion) basically like a traditional minor upgrade…it seems to be more like an iOS for a desktop. Also the layoff of the “Mac” in “Mac OS” kinda isn’t promising.
I hate to say this, but I kinda miss Steve Jobs. I didn’t always agree with his ideals, but at this point with Tim Cook running the show, I have came to the conclusion that its Tim Cook’s company not Steve’s.
This comes from a writer who started his computer fascination on a Macintosh II and LC series boxes and using System (later Mac OS) 7 onwards to Snow Leopard.
I think Apple is making a mistake too early.