@sun coreutils is only one GNU package and systemd has a hard dependency on GNU.

But yes, the long term goal is to remove the GNU/Freedom.

Rust doesn't fully eliminate memory bugs and increases the number of other bugs exponentially - as it forces you to write more lines and use far more syntactical tokens to do the same thing than GNU C.

More lines mean more bugs and most bugs are not memory bugs - those are logic bugs.