A wide gap separates NIH syndrome and a healthy culture of collective code ownership (with the automated testing, shared style guidelines, frequent small commit

A wide gap separates NIH syndrome and a healthy culture of collective code ownership (with the automated testing, shared style guidelines, frequent small commits, and continuous integration that usually go along with it). The situation you're describing sounds closer to the NIH side, but don't throw the baby out with the bathwater the next time someone wants to rewrite someone else's method to improve its readability!