Great video as always
@Alexander! Is your clip based on UK or US terminology though? Slight amendment I'd recommend under Fiat Money is that 'legal tender' refers to money by decree of the crown (in the UK) that must be accepted to pay court fees, debts or money to the Crown. Businesses are under no legal obligation to accept any set currency: They could request you pay in chocolate buttons if they wanted:
https://www.bankofengland.co.uk/knowledgebank/what-is-legal-tender
I learnt this the hard way when I got into a dispute with a retailer 😶