I don't think so. The financial system has people behind them, and such people have a lot of power on dictating, manipulating things. Manipulating the average person. Crypto could be 1000x better, but that won't do it any good.
No, crypto may be useful in payments but I am pretty sure it could not destroy the financial system or the banking payment system. Banks had establish already and are way too secure but the disadvantage are those high transaction fees being deducted to every transactions especially if huge money were involve.
However, it is still best to make choices, either to use crypto pay or the financial.system that are establish and secured too.