I said that they got rid of it, but I think the fact that such an obviously bad idea could get in the door in the first place is symptomatic of out-of-touch managers, and the same people are still there-- just coming up with new bad ideas (like the 3 word mission statements) that will linger around for 5 years.

The fact that performance is peer-driven is overall a good thing. It means your relationship with your peers matters and this isn't just an arbitrary managerial decision.

In theory, this would be true. In practice at Google, manager-as-SPOF is as much in force as it is in any other company. Actually, I think it's more the case at Google than at most places, because managers can unilaterally block transfers and because HR does nothing about abuse-of-process issues.

What Perf does is that it gives more reasons to deny promotions, not more avenues toward success. Managers can block promotions, and so can influential peers. So, in some cases, can trigger-happy idiots who abuse the unsolicited feedback feature (which does nothing but breed distrust, especially with the "manager-only feedback" feature, which is, at best, a quarter-step up from "XXX is a slut" gossip in fraternity bathrooms).

See something that needs fixing? Then fix it.

If you try to fix managerial, cultural, or product problems you just make enemies of the people who are invested in bad ideas and stupid decisions. It's really not worth doing.