Not trying it yet is fine. Making declarative statements on a product you haven't even used is just absurd.
Dude clearly hasn't used GPT for translation before and his next reply is telling me the ways GPT should fail based on his pre-conceived notions of its abilities. Except i have actually extensively tested(publicly too) LLMs for translation (even before GPT-4) and basically everything he says is just plain wrong.
I'll never understand why people behave like this.