"It's not money" is interesting. Banks hof claims on currency rather than money, where currency does not have a store of value.
Discussion
Exactly paper currency always was the oposite of money: debt. And still is.
Paper currency is government debt.
Banks credits are paper currency debt. IOU of an IOU.
But the banking system only works with the assumption that the banks is never repaying its debts. Because if it does it goes bankrupt. It’s a ponzi scheme