Actually Nim's attitude is more suitable for group work because every group can have its own style of coding. A simple transformer could be used to normalize the code. However it would force the developers to qualify all imported conflicting names which is a good idea anyway.
You cannot do this in C++ and Rust. There you actually have to keep a consistent style.
I agree that "just keep a consistent style" is a good approach for single-person projects. It's harder to keep it working well as you get more people working on the code, though.