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This is why you shouldn't use those store discount/loyalty cards:
https://themarkup.org/privacy/2023/02/16/forget-milk-and-eggs-supermarkets-are-having-a-fire-sale-on-data-about-you
As an example, here's one I created for myself at the beginning of the lockdown:
https://www.teepublic.com/mask/10479330-resist-facial-recognition
Even if you use "anonymized" data and pay with cash, you'll still probably need a facial recog confuserizer. Which I guess is one thing that COVID has somewhat normalized.