Read the article, mentally replacing Rust with C++ (or terms like gccrs with g++). Interesting times for the kernel; you have to wonder whether Rust will be a success or if there will be a repeat of the 1992 attempt [1] to include C++.
Rust brings a lot more to the table than C++ does - it solves many of the "hard" problems, at compile time, that kernel developers have to constantly grok with. I have a feeling, that it'll not only do well in the Kernel, but may eventually become the preferred language.