Metaphors have the problem of being imprecise - I would say this is more like "are you using normal chef knife or your own special chef knife that nobody has?"

Metaphors have the problem of being imprecise - I would say this is more like "are you using normal chef knife or your own special chef knife that nobody has?" or "are you using standard set of tools that every workshop has, or are you used to your own special stuff that nobody else has available"? You're framing it as if the OP said "fuck fancy text editors or IDEs, I'm using notepad!" but I don't really see it that way. As I see it, it's more like "do you really get that much gains from customizing your vim / Sublime Text / IDEA so much that you're incapable of working on someone else's machine? Is that worth it?"