LLMs are here and Google Translate is still bad (surely, if it was easy as just plugging the miraculous perfect llms into it, it would be perfect now?), I don't think people who think we've somehow solved translation actually understand how much it still deals extremely poorly with.

And as others have said, language is more than just "I understand these words, this other person understands my words" (in the most literal sense, ignoring nuance here), but try getting that across to someone who believes you can solve language with a technical solution :)