It's usually out of scope by the time you're writing a CL, which is fine because there's design review. The issue is about priorities. Nitpicky code review can be very expensive, and I'm not convinced it brings noticeable benefit.

I've seen team-quarters wasted due to bad large-scale decisions. Sometimes the truth doesn't come out until the the real thing is in production, and all these extra burdens make it harder to change course. I think people are starting to get this because the amount of code nitpicking or caring about small things in general has gone way down.