The OpenBSD way of one blessed libc as the interface to the operating system is perfectly fine for their project. The Linux kernel is a separate project from t

The OpenBSD way of one blessed libc as the interface to the operating system is perfectly fine for their project. The Linux kernel is a separate project from the several different libc implementations and the Linux kernel project treats the syscall API as a first class contract. If a language wants to use it directly for some reason that is an option on the table.