Fair point, I suppose non-Americans could be confused. But given the context, I still think this instance was very clear, and therefore the correction needlessly pedantic.

Probably because it’s unnecessary and pedantic. No one is confused when someone is technically incorrect and types “calories” when talking about food.

(Only tangentially related, but) To be fair, most microwaves are needlessly complex and/or have terrible user interface. I stand by all any microwave needs is one or two knobs, and that’s it. One for time of course, and another for power selection if desired.

I always hate using new microwaves at work break rooms or such because somehow they are all different and I feel like a caveman trying to figure them out every time.