Yeah, probably that last point would depend on how you actually use LLMs, if you don't review the code at all, not even glancing on it (aka "vibe coding") then it probably doesn't matter so much, yolo and deploy.

But for the rest of us who aren't vibe coding, but pairing with LLMs and actively steer them, correct things and iterate while reviewing the code, design and architecture deeply then yes, I agree a lot, matters more that you're familiar with the language than the LLM, they can pick up new programming languages in a message so doesn't really matter, knowledge seems to come from programming, not locked into a specific language's syntax.