No it isn't. The best LLM software engineering language hasn't been invented yet. As a human, spaghetti code sucks and goto's are considered harmful. I can't reason above what my puny human brain can keep in context. Phone numbers are hard to remember, and that's only 7-10 digits. LLMs have no such problems, and as such, should be able to write more performant code given fewer constraints. Given a problem statement, an LLM could "hand" optimize assembly for the specific CPU the code is to run on, eg that exact Intel CPU's speculative decoder pipeline length.