They kinda are: "This issue is to fully eliminate LLVM, Clang, and LLD libraries from the Zig project." https://github.com/ziglang/zig/issues/16270
libraries, not processes.
I find that a very bold move, how will they reivent the wheel on the man-years of optimization work went into LLVM to their own compiler infrastructure?
Yes, as a backend. Clang as the `zig cc` frontend will stay (and become optional) to my knowledge.