That's interesting, it's the first time I hear about this concept. I just barely skimmed a few articles about the concept but I'm not sure how this would solve the problems in TFA. In particular deflation: if I need to invest in a currency why would I even elect to use an inflationary one? What would be the incentive?
Also a currency is only as good as the things it can buy, if you end up having to convert your WhateverCoin to BTC or ETH before spending, does it change anything? You could use special-purpose crypto currencies to replace frequent-flier miles, starbucks credit and other privately owned "currencies", but what would be the point of that?
>As a payment system I think cryptocurrency is vastly better; the more I use my hardware wallet, the more I'm horrified by legacy systems that work by giving vendors the ability to withdraw as much as they want. It's a fundamentally insecure system, made sort of workable by layers of hacky mitigations.
Is it a problem in practice? If a vendor overcharges me I complain to my bank, the charge is reverted and then the bank takes care of dealing with the misbehaving party. If anything it's the opposite that's usually the problem in practice, people using chargeback fraudulently.
Meanwhile in the crypto world if your wallet is compromised or if you get scammed you're on your own.
Bitcoin is great for buying drugs but for legit purchases Visa is a whole lot more convenient. It's quicker, easier and offers much stronger guarantees. From the vendor's point of view it's less great but as TFA points out "Sellers bear costs from reversibility, but those are offset by increased buyer confidence." No citation though, unfortunately.
That's one of the weaknesses of crypto IMO, it's all about "trustless" transactions, except that when you actually use your currency to buy something outside of the blockchain at some point you have to trust somebody (or somebodies) to actually provide the goods or services you're purchasing. All the systems that try to work around that so far seem to simply reinvent the banking system with extra steps (trusted 3rd parties etc...).