Earlier quoted context omitted.
A payments system on Facebook makes a ton of sense and would be very useful. I just don't get why it has to be cryptocurrency.
Biggest benefit of using blockchain and cryptocurrency here is open trust (this term is the best way I can think about describing this). Any internal database is subject to all kind of human and technical errors. But with a network of trusted parties that solves the Byzantine Generals Problem. This becomes secure and trusted as trust is given. No one can hack it at will without taking the 50% of the network down and…
Centralized stablecoins should be illegal, because the issuer can print money from thin air without collateral, unlike banks which are regulated and the money supply is controlled with interest rates.