I am not sure, but why can't C,Rust and Zig with others (like Ada,Odin etc.) and of course C++ (how did I forget it?) just coexist.
Not sure why but I was definitely getting some game of thrones vibes from your comment and I would love to see some competition but I don't know, Just code in whatever is productive to you while being systems programming language I guess.
But I don't know low level languages so please, take my words at 2 cents.