Unfortunately that’s what makes it scary, what you’re saying isn’t true. Look up “L3 Processing Data” which is becoming more and more common (which informs the payment provider/bank about exactly what you purchased). AmEx for example is notorious for implementing that.

Furthermore, they don’t need the details. What if I just don’t want the government or bank to even know that I spent $10K at “Smucks Sex Store Co.”?

Anyway, I hope you’re starting to see the importance of privacy and cash. Even if they’re ridiculous and silly to someone else.