Your first point is valid. Obviously, crypto is worthless if there is no access to the Internet. But the same will be true for the crypto-yuan that may be the world's reserve currency in twenty years. It's just that it will also be controlled by a dictatorship rather than being a decentralized currency of The People. Governments are terrified of Bitcoin. It has the power and potential to completely reorder the world in a positive way, but also in a way that would strip the Establishment of power. That's why you have supposed advocate for The People, Liz Warren, railing against crypto.

The part I bolded can be said about any commodity that isn't a basic human necessity, i.e. everything expect food, water, land. The only reason the U.S. Dollar or gold have value is because people accept that they do. In the event of a complete societal collapse carrots may have more value than gold. You won't be able to eat your gold.

It's like my Libertarian crypto-mining friends say: Money is a human concept.