Sounds like a symbiotic relationship to me. The attackers get to advertise their capability for pulling off attacks, and Google gets to advertise their ability to stop them.
Almost all (but not all) of these attacks are based on some kind of problem that leads to amplification. Advertizing that people should fix these points of exploit help everyone on the internet.
False flag? :)
Maybe Google is responsible for the attack, to be able to publish this blog post!
<\tinfoil-hat>
If Google truly went rouge, they could turn all those Chrome installs and Android devices into one gargantuan botnet.
Google is already partly rouge, at least in their logo.