Earlier quoted context omitted.
In the Illuminatus books there is a story that may help illuminate this. Some dude posts signs in a store that say "DO NOT SPIT ON THE FLOOR. --MGT". The staff assumes it's from management, so they leave the signs up. The customers feel insulted that management would think they would spit on the floor, so they stop buying there. The store goes bust. The apparent blandness of the CoC may exactly be the problem.
That example shows a clear problem in the employee/management relationship. Putting up signs like that without adequately informing the employees is really bad passive aggressive management. Likewise, the employees simply accepting such a change being made is a clear indicator that they're either afraid to ask questions of the management for fear of reprisals, or that they've simply stopped caring about what manageme…
You know, in many places confronting management about the changes they introduce is not something that is generally practiced, and if you do that, especially in a semi-public way (even if that means Cc:-ing a few coworkers), you're simply at risk. This applies to small mom-and-pop shops, and equally applies to Google.