Wouldn't it be much be easier to list the small handful of cases where you want it to apply?
Think I am going to pay you in my house when you pay me money for said house? Ha! By this law, I can simply give you your money back. You are obligated to accept it since you must always accept money as payment, and now the house you lived in prior is gone. Seems incredibly problematic for the vast majority of transactions.
You are really hung up on misinterpreting this. I'm not sure if it's intentional or not, but this is like the 4th place you've confused "must accept cash for payments" with "must accept a cash replacement for goods or services purchased". Clearly, if I buy a good from you, you have to deliver me that good. And I have to pay you in some form. Because I am giving you a credit card or other cash equivalent, you have to accept cash (up to a certain level).
A million Swiss francs in bill form isn't that much. We have CHF 1,000 denominated bills and the law states the maximum in coins is CHF 100 that you have to accept.
> Think I am going to pay you in my house when you pay me money for said house? Ha! By this law, I can simply give you your money back.
No. That would be a violation of your sales agreement. That is a contract to transfer ownership of a property.
Likewise after six months on a waiting list a surgeon cannot then say to their patient "Haha! No actually here's a cash payment instead. It's cash and you are obligated to accept according to Swiss law!". There would be legal consequences. It's not a contract to exchange a monetary value. It's a contractual obligation to provide a service and it is regulated.
Think I am going to pay you in my house when you pay me money for said house? Ha! By this law, I can simply give you your money back. You are obligated to accept it since you must always accept money as payment, and now the house you lived in prior is gone. Seems incredibly problematic for the vast majority of transactions.
Which is no doubt why nobody actually follows it.