everything is volatile. some things go both up and down. fewer things more up than down. you're arguing that only things that go down are an acceptable form of money?

Although everything is volatile, money is the most liquid asset and therefore the least volatile at all times. BTC already facilitates settlements for hundreds of millions of users, and its natural users are LLM agents on a sovereign basis. I would argue that the only acceptable form of money is an asset with expected low volatility, aka a commonly accepted medium of exchange. However, Bitcoin's price can still jump by 20% during a period of historically low volatility.