Linux is the preferred choice because it is traditionally more performant than windows regarding these things, meaning windows users get gains Linux users already have.
And Nvidia has a different codebase for Linux, so it might take time to get some of those efficiency gains over to Linux.
Additionally as a little aside there’s no way Apple is ever dealing with NVIDIA again, and they might dump AMD all together in the coming years.
Why just windows?
Two reasons:
Linux is the preferred choice because it is traditionally more performant than windows regarding these things, meaning windows users get gains Linux users already have.
And Nvidia has a different codebase for Linux, so it might take time to get some of those efficiency gains over to Linux.
Additionally as a little aside there’s no way Apple is ever dealing with NVIDIA again, and they might dump AMD all together in the coming years.