The header: "Apple 2.0 - Covering the business that Steve Jobs built" shows the category that this blog post is in.
While it doesn't point out in big letters that this is an opinion piece, this article is in the category of a well established Apple opinion blog in their tech blogs category.
It's also pretty clear from the writing style that this is an opinion piece.
Sure, it's probably easy to tell for someone who's a regular reader of CNN. However, I believe that most people - even several (if not many) from HN - will see the CNN header, then read the article and assume it's CNN. They should be A LOT clearer about it being an opinion piece.
I'll save you the trouble: it doesn't.
So, while you maybe right, CNN doesn't indicate in any way that this is the case.