The point is that the AI just gives you the answer without you having to concern yourself with what measurement system they use in the US.

As I said, it routinely gives incorrect data so it can't be relied on for something that matters, like a safe cooking temperature.

Note that we're talking about the Google AI Summary here, not AI in general. Whatever magical capabilities you think your favoured model has or will soon have, the Google AI Summary is currently utter garbage and routinely spouts nonsense. (Don't try and persuade me otherwise. I have to use Google at work so I see its lies first hand every day.)