I worked with a guy who was reputed as a 10x engineer. After about 6 months on his team it became apparent that he was very good at communicating to his manage

I worked with a guy who was reputed as a 10x engineer. After about 6 months on his team it became apparent that he was very good at communicating to his management, very good at writing excess complexity into his code, and very good at preventing the developers he was leading from taking on large or impactful projects. My takeaway was that he was more of a "turn-everyone-else-into-1/10X" developer. I jumped onto a different team as soon as the opportunity came up (as did most of the folks who worked with him).