The first I heard of it was actually a week or two before the article came out when Google hired Colleen Kelly away from Leo Laporte's TWIT network. At that time, Colleen mentioned that she had to choose between Mac and Lucid Lynx at Google and ended up picking Lucid.
Which is somewhat ironic since Colleen had a reputation for complaining about TWIT's heavy use of Macs instead of Windows.
So I guess that's at least one first hand report of the story being true.
However, considering Google still has to support the billions of Windows/IE users out there, I suspect there's an enormous loophole in policy.