Yes, but what does that have to do with "Just walk out"? Grocery stores across the country could do (or may be already doing) all the creepy things you're desc

Yes, but what does that have to do with "Just walk out"? Grocery stores across the country could do (or may be already doing) all the creepy things you're describing without implementing "Just walk out", with the security cameras they already universally have installed. Or, they could implement "Just walk out" without doing any of those creepy things. They're irrelevant to each other. I don't see why you have a problem with "Just walk out", it seems to me like your problem is with the prevalence of security cameras. That's a valid criticism of, say, Ring, because it's pushing to increase the prevalence of home security cameras, but "Just walk out" isn't going to increase the prevalence of retail store security cameras, they're already ubiquitous.