]I asked you a simple question yesterday: a borrower is obligated to pay his dollar loan, and I have dollars, either deposit or notes. How will he get the dollars, that is, worthless numbers? "Protection" that I am talking about means the banking system forces the borrowers to trade me goods, services and labour for worthless numbers. It has nothing to do with the things you are describing.
you as a dollar holder are not obligated to give him your dollar for him to pay it back to the bank
you as a dollar holder are contracted to request dollar from him to settle the banks debt
you as a dollar holder are secured receive a dollar from him when he pays the bank
he can pay the bank via many means. but that contract is between him and the bank. not you
he can go abroad. and work on an african gold mine. and get paid euros. and a euro bank can convert that to dollars to pay his loan.. meaning never interacting with you
he can become a bitcoin miner, mine some rewards and go to an exchange and then pay off the bank loan.. again nothing do to with you
he can get a job or manufacture something, charge payment in many forms or such. again nothing to do with you