I used cash religiously at fast food for years for two reasons. One is I wanted to keep cash alive. The other is out of this surveillance fear, specifically that my health insurance would go up if they saw my fast food intake.
Truth of the medical matter aside, I don't like being tracked all the time. Sadly Covid changed my habit but I still notice they take cash so I'm taking this post as a reminder, not that they won't implement license plate scanners or some other way to dox me.