There is so much inaccurate about this article.

You never even mentioned ledger based money which was in place starting in the 1500s.

Fiat money is unlimited and inflationary.

This is not true. In fractional reserve banking, the money supply is expanded when commercial banks lend. So they have to make loans, which are not unlimited, before the money supply expands.

Of course, when we have loans paid off or default, money is contracted.

Central bank reserves (liabilities) are not legal tender.