You are using the term "OS" to mean something other than "kernel", which is the meaning required by this thread (and arguably entire topic) thus far. This is d

You are using the term "OS" to mean something other than "kernel", which is the meaning required by this thread (and arguably entire topic) thus far. This is demonstrated by the rest of your comment, in which you note that linux has a stable, language agnostic system call ABI, and that other libc implementations exist. TFA was ONLY about Linux syscalls, so what other platforms do or do not is irrelevant in context.