Sure it doesn't. Except you can use it to transfer value without first consulting your potentially totalitarian government without much effort for the first time in the entire history.
Gold would like to have a word with you... And seashells. And giant stone coins. And on and on and on.
In fact, as far as history goes, government backed fiat currency is a very recent invention.
States where the sale of a cup of coffee doesn't involve a tax.
I live in the UK, there's no sales tax and the sole trader selling coffee at my local railway station is almost certainly below the VAT registration threshold, so there's no tax on the purchase at all
regardless, paying a tax embedded in the price of a good is not the same thing as consulting the government on the purchase
But if you don't like even that much, then replace "cup of coffee" with "lemonade from a neighborhood lemonade stand".