70% of the money supply in Germany is literally sitting in checking accounts. If people actually saved money by lending it via certificate of deposits according to classical economics then this number would be much lower.

>They don't have Scrooge McDuck cash vaults, either. Their money "store" is all invested.

The parent said cash hoarder to cash hoarder and that is true when you buy stocks or art and neither consume the newly obtained money nor lend it out.

>Even if the money is deposited in a bank, it doesn't stay in the bank. The bank loans it out. That's how banks make money. You deposit money, they loan it out to someone who pays them interest.

As I said above, the money isn't lent out, new money is created with loans and the money that is being created is also kept in checking accounts so nobody is bringing their money to the bank in the way you imply. Money in checking accounts is essentially dead money. It is like the money in Scrooge McDuck's vault.