My point isn't about who _can_ do it but who _does_. If anyone on my team was writing anywhere near 1k LOC/day, I'd think it was a serious problem. If the whole team was pumping out 1k LOC/day/person, I have to imagine I'd be getting as far away from the entire team/org as possible.

Maybe not the best example, but I used to work with a guy who had pretty large scripts that he was writing for one of our projects. It turns out it was mostly copy-paste, so it sort of got the job done -- except he fixed bugs in one place but not in the other. The whole thing was a huge mess to understand and maintain. And he was a senior engineer at the time (now principal, to my great amazement).