Even if, we are talking about the Linux kernel. Our entire ecosystem builds upon C. People choosing C for new projects because it is the common denominator.
If Rust should be adopted in the kernel faster, patches should be send which comment how each line addresses issues of memory management solved and elaborations for rust specific patterns unfamiliar to a C dev.
Lurkers will pick up Rust that way as well.
Each Rust dev had to pick it up and therefore should be able to enable other - probably more experienced - Linux kernel hacker to provide reviewable patches.
It shouldn't be the other way around, else you are just stepping on the efforts the other human provided to that project.