Why do you consider it immature to have tooling preferences, in cases where your tooling choices don't affect others? I see no reason to assume all brains will

Why do you consider it immature to have tooling preferences, in cases where your tooling choices don't affect others? I see no reason to assume all brains will work equally well with every workflow. The important thing is what gets checked into the repository, not the sequence of keys you pressed to get there. (I am currently that person, with vscode and emacs. I have better things to do than retrain myself out of a set of keybindings I've become very efficient with.)