This entire article is ridiculous. Even if were true, it wouldn't be interesting as very few smartphone users know what OS kernel their phones run, and fewer still care.
And even as a developer you won't get very far trying to develop applications for iOS, Android or RIM's QNX based devices using the original Unix API.
It would be much truer to say that the rise of smartphones represents the "revenge" of ARM over Intel.
You won't get very far developing GUI applications for modern Unixes using just the original Unix APIs, either. And most Windows programmers today aren't using Win16 APIs. I think you're missing the point.
I've written a few iPhone apps. My background in Unix, and the Unix libraries I've been able to use without modification, were both extremely helpful.
And even as a developer you won't get very far trying to develop applications for iOS, Android or RIM's QNX based devices using the original Unix API.
It would be much truer to say that the rise of smartphones represents the "revenge" of ARM over Intel.