Legitimately surprised at sibling comments missing the subtext here. s/cash/cryptocurrency of parent post and you have word for word the standard complaint against cryptocurrency, which I believe is the point @camjohnson26 is trying to make.
Thankfully some brilliant souls pointed out you can buy things with cash. The comments about donating to political parties are especially ironic. Hacker News is great for technological information but way off base when it comes to finance and economics.
It doesn't help that we've all seen other / real (depending on whether GP is being sarcastic) authoritarians making exactly that argument I guess.