I think the key point is modified, not just net new lines. About 15 years ago I worked for a genius manager who had his underling write a script to measure prod

I think the key point is modified, not just net new lines. About 15 years ago I worked for a genius manager who had his underling write a script to measure productivity this way, and they forgot to account for removing lines of code. They were so pleased with the one guy who just loved to copy paste crap over and over, versus us who were actually refactoring or reusing existing code.