No. It’s only about the kernel itself, not Linux Systems(aka Distributions).

Earlier the kernel did only consist of C code, but for some time now the option to develop parts of the kernel in Rust is being worked on. In the end it both compiles to native machine code. The running kernel does not require the Rust toolchain to be present.

I think they mean Wine or Proton

Like literally pull my disk out of a gaming nvidia machine, and plug it into my AMD machine with full working graphics.

This should work already, i switched from nvidia to amd this year by swapping the cards and removing the nvidia drivers some time later.

I guess it’s because the drivers only apply to their specific hardware, so no problems having amd and nvidia drivers present at the same time.