Thanks for pointing it out. I've tried both as interactive shells for a few minutes. Murex seems to have a more minimalist approach that works well as a drop-in replacement.
However, I have trouble understanding some design decision, such as inventing redundant keywords. And I've spotted bugs in boths (e.g. ls --literal fails in nu, and the completion proposes it twice in Murex).
That is not how AML-CFT work. Banks calculate your level of risk. When in doubt, they will cut you off or block individual transactions, unless the benefits outweigh the risks.
More seriously, if you want to learn money and its infrastructure, I recommend Banque de France's book on the matter "Payments and market infrastructures in the digital era" https://www.banque-france.fr/system/files/2023-04/payments_m...