Facebook (and others) were bypassing IE’s third-party cookie control in a way similar to Google

The story here is a bit more nuanced, though. It turns out that IE was relying on an outdated standard (P3P headers) to control third-party cookie access. In fact, hundreds of sites set invalid P3P headers because most modern browsers don’t properly support them.

Seems like this is more an issue of Microsoft trying to jump on a bandwagon bashing Google (while conveniently omitting an offender like Facebook, with whom Microsoft has a cozy partnership) than Google being evil.