That's very "sort of", and very remote! I wouldn't trust my (the UK) Government as far as I could throw them!

Personally, I don’t trust any of these systems or organisations, neither tech, nor fintech, nor traditional banks. They’re all flawed for different reasons.

Technology is an attack surface the traditional banks don’t comprehend (from the horror stories I’ve heard from tech people who worked for them), and successful attacks on banking have rewards that tech… I don’t think fully appreciates.

True, but Tech also doesn't really appreciate banks. Banks make much of their money from transaction fees, from literally moving money from one point to another, to large IPO underwriting. Tech can certainly lower transaction fees, but a bank's transaction fees is more than just getting a job done, it's trusting that the job can get done. Banks are able to get away with large transaction fees because they have developed trust and credibility that many are willing to pay for. Tech simply sees this as an engineering challenge and ignores the non-tech legal and social guarantees that banks provide.