Is that what you were saying? Because I'm trying to disagree with you. You seem to say that banks are not magically creating 10x money, that it only lends out money that was previously deposited. This is not the case.
Bank financing is counterintuitive: deposits are actually liabilities, and loans are assets... but banks also routinely borrow money (e.g. from the Fed) well in excess of their book value. For example, JP Morgan's current debt-to-equity ratio is 1.675 [1], meaning that they are also (in a sense) "mortgaged" well beyond their net assets. It's debt all the way down...