The Usenix article was linked for its quantification of kernel vulnerabilities at any given time, specifically those that are silently fixed or mislabeled by vendors. That's why I specifically quoted that part in my other post; my linking to it doesn't imply my agreement with its conclusions -- I completely disagree with their conclusion/solution.
What don't you understand about "unexploitable"? Understanding that would be pretty important in determining whether the thing I mentioned helps kernel security or not, wouldn't it? You said the example I gave both helps kernel security and is not a bad idea, but neither of those things match up with what you said earlier:
1) "How would patching the kernel help against kernel bugs?"
2) "it seems a bad idea to think that any specific part of the kernel is able to protect the kernel."
So yes, what you're trying to say is clouded in riddles, because it doesn't make any sense whatsoever.