Stupid meme. Many other countries also classify tomatoes in with vegetables for various commerce regulation and taxation purposes. That case was just capitalists trying to get out of paying tariffs by nitpicking the definition of a tomato
I hate these things where people twist reality just so they can make a cute "Americans are so dumb" meme. If you want to bash the US, there are plenty of relevant topics to choose from for criticism. Better yet, read a book once in a while instead of just scrolling the internet and grabbing random shit that's gone viral.
And BTW, what's a fruit or vegetable is not some objective Sacred Truth that science "discovered", it's that science came up with a system of categorizing plants that people deemed to be useful for the study of Botany, just as legislators came up with a slightly different classification useful for taxation, and regular people also classify them in a way that's useful for cooking purposes. This is not a situation where Science! is an almighty God. It's just ways of sorting things. "Knowledge is knowing that a tomato is a fruit; wisdom is not putting it in a fruit salad."