That’s rubocop’s raison d’etre. I like that you can be completely free exploring with code in the style you like, and “button up” when it needs to become shipping/shared code.

If everyone thought like this there would only be one language that everyone used. Writing software is creative.

Sure. Peer review, making sure that the code one person has written makes sense to the rest of the team, is a fundamental and incredibly important part of pretty much all team-based development projects.

That doesn't sound any more difficult to resolve than the fact that you are probably working on a team where different individuals prefer different programming languages.

that's why having a coding style guide is important and to lint it every commit.