In all fairness, this is an article by someone who knows his stuff saying maybe. There's so many crackpots going after P ≠ NP that we need to hear from those people saying this time is different. The news to this article isn't that a claimed proof exists, but that R. J. Lipton is saying it seems plausible.
Yeah - I updated the post title to make that a bit more clear.
The reason I posted a link regarding the same topic again is because this is a link to a blog post by a respected complexity theorist which actually discusses the proof albeit cursorily.