A lot of the problem is that GCC hasn't supported Rust, and LLVM doesn't support many platforms. Since this article was written (2021), there's been work to imp

A lot of the problem is that GCC hasn't supported Rust, and LLVM doesn't support many platforms. Since this article was written (2021), there's been work to implement Rust fully in GCC, as well as ways to call from LLVM the GCC backend (which supports far more architectures). So there's a reasonable expectation that some of this problem will be fixed in the long-term. IBM mainframes write most paychecks, and companies do pay some OSS developers to support some of the architectures the author doesn't like. Making it impossible is different.