How much of the analysis did you even read? Get to the caps comment (which I admit was kind of dumb) and just tune out?
They pointed out not that the Vikings fumbled 2 times bs the Pats 0, but bs the Pats 6. It's been written and discussed over and over again that recovering fumbles is usually a matter of luck. The pats were fortunate and recovered all 6 of theirs, the Vikings were less fortunate and recovered neither of theirs. The point still stands, the Pats put the ball on the ground 3x more than he Vikings did. But it doesn't support the initial analysis, so it was ignored.
And as the article pointed out, the plays/fumble metric that is being looked at doesn't take into account any context about the type of plays called. And looking across all teams isn't even a star that fits a bell curve anyway. Weirdly, the converse stat, fumbles/play, does fit such a curve. And by whatever trick of math (see: stats can say whatever you want) that stat shows the Pats on the top of the charts again, but not by an implausible amount.
The whole of that article in fact does seem to suggest that they're a well coached team, and not some statistical impossibility. You just have to, you know, read the damn thing.