One way of load balancing around the world is to resolve DNS differently depending on where the user comes from.
So, a user in the UK looks up example.com and gets one IP address, while a user in Australia looks up example.com and gets a different address. I get their servers in Europe, s/he gets them in Oz.
So, it's possible to see how Google DNS can break this - if they return the same address to everyone.
But the article is as badly written as most of the replies, so...