According to Stroustrup & co, it's less: They see a good dev optimistically writing 2k lines of finished non-test code a year, and that's when rewriting code ¹, so that checks out! (To be clear, I'm joking and agree with your sentiment, but they really did say that in an official reply to the US gov)

¹: https://downloads.regulations.gov/ONCD-2023-0002-0020/attach...