Is it easier to learn the simple concepts of git and have transferable knowledge, or to learn your proprietary 6000 line bash script?
However, they overstepped and gave me a hard time when they learned I was managing my own local repo how I wanted. I'm relatively good with git and would clean up my pull requests to meet the standards before submitting them to the main repo, but they still hassled me over the naming of my local branches and doing local rebases, etc.