Is the Guardian Website Keyword Stuffing?

While browsing the Guardian website I came across a story which had this fantastic URL:

The aim of having such a huge URL is that when someone links to the story (just like I’ve done), the anchor text is full of nice rich keywords which should help the website’s SEO.  

Whilst I can’t argue that the keywords are all relevant, I wonder if it’s entirely necessary?  In my opinion, it’s a variation on keyword stuffing.  Also, Google has been known to devalue websites with lots of hyphens in the URL so their SEO attempt may actually backfire on them.

What do you think?  Is it a legit SEO technique?