The four-gluon diagram that's shown in the text is a bit misleading, because it's not obvious where the denominator in the expression it's supposed to represent is coming from-it should come from an internal line. The text does mention internal lines, but the diagram dosn't seem to have any.
When Silver's articles put forward ideas that people agree with, then he's a statistical savant, but when they don't, he's a sell-out traitor. I say what's sauce for the goose is sauce for the gander. ;)
There used to be a caching website you could link to without inflating the Daily Mail's page impressions and encouraging their propensity for posting revenue-boosting. clickbait. Sadly this kind of website is a pretty blatant infringement of copyright, so it's no longer around.