> That is not what legal tender and “for all debts public and private” mean [1]. That language refers to dollars being currency “courts of law are required to recognize as satisfactory payment for any monetary debt”.

That's exactly what I said: that physical note has value only in so far as there is a debt with which to pay it. That debt is the value someone else's productivity created. If your dollars are backed by nothing, please send them all to me so I can keep them for you.