Earlier quoted context omitted.
You claim that the bank needs no existing customer deposits to create a demand deposit and liability in your account. This claim is true only in the pedantic sense: if the bank is otherwise capitalized (e.g. money from investors in the bank), then it could create loans using whatever money it has, as opposed to using money specifically from depositors. However, what you probably meant is that a bank could loan out mo…
Can you describe how a bank uses money that it has to originate loans? EDIT: note that this paragraph (and the one preceding it) directly contradicts what you are saying: This description of money creation contrasts with the notion that banks can only lend out pre-existing money, outlined in the previous section. Bank deposits are simply a record of how much the bank itself owes its customers. So they are a liability…
The classic "bank takes your deposit and lends it out" only applies to certificates of deposit, after all, you have no access to that money. You can't transfer or withdraw it until the agreed date.