I’ve been wondering that, too, for the past two years, ever since it became clear that the then-new GPT-4 could translate better than Google Translate could. A lot of people still use Google Translate because that’s what comes up in Google requests for translations; also, it seems to be the translation engine built into Google Docs. However, properly prompted LLMs are definitely better than the previous generation of dedicated machine translation, which I’m afraid is what Google Translate still seems to be.