I don't like this re-framing of "the 10x engineer" to be someone who writes 10 times as much low-quality code.
It might not have been a rigorous study and may largely be a myth, but the myth is about engineers who are 10 times as productive, even accounting for quality.
It might not have been a rigorous study and may largely be a myth, but the myth is about engineers who are 10 times as productive, even accounting for quality.