I don’t think that’s relevant, because the discussion was about paying for goods at Target, a department store.
Even so, there’s a good chance your opinion is incorrect; some legal experts state that if a sit-down restaurant posts signs stating they don’t accept cash, it can be viewed as a contact[0]. Cornell Law asserts the following (note the past tense!): “Federal statutes do not require a seller to accept cash as a form of legal tender for payment of goods or services that were rendered.”[1] Most likely, the waiter would get a manager, and they’d take the cash, but why go through all that trouble when you can just eat at a regular restaurant that does accept cash?
0. https://charlestonbusiness.com/legal-perspective-are-busines...