> Ask your waitress for a bowl of oatmeal with berries and they bring tomatoes, you will be upset.

Right, because if you ask your waitress, you expect culinary rather than biological definitions to be used.

Then again, you'd usually ask for something more specific than "berries".

The issue is domain-specific definitions. It causes a lot of misunderstandings. A common issue is the meaning of the word theory.

You'd probably be upset if they brought raw cranberries or poisonous juniper berries too.

Yes. Oatmeal is culinary. What's your point?

Read it again. Fruit/berry was proposed as not being culinary.

In context, it was clearly saying that a tomato is a fruit/berry in a biological context, but a vegetable in a culinary one. That doesn't mean that those words don't also have different meanings in other contexts.