Googler, opinions are my own.

My one issue is that the author does not try to think about ways Google translate is better. It's all about model size. Google Translate models are around 20mb when run local on a phone. That makes them super cheap to run and can be done offline on a phone.

I'm sure Gemini could translate better than Google Translate, but Google is optimizing for speed and compute. It's why they will allow free translation of any webpage in Chrome.