Hopefully you don't use loyalty cards and points with your cash purchases.

Make sure to don't park your car in the same parking lot as the retailer you're shopping at.

Also make sure to wear a mask, sunglasses and baseball cap to hide from the cameras.

If you're not doing these things, then using cash is just as dystopian as Visa or your bank. 

 I don't live in the USA. Not too many cameras.

Point is not giving them the information by default – not living paranoid.

I'd rather use less fiat layers anyway 

 I don't live in the USA either, but the USA is everywhere.