I put a question mark in the title because I don't trust the banks, and I don't know if this is a way of telling the public authorities to put more restrictions on cryptocurrencies. Or I don't know if it is a way of surrendering to the evidence, and in the same way that for many years they ignored Bitocoin and cryptocurrencies, but now they are going to offer custody services, etc., they now recognize that this is unstoppable.
I do not think that bitcoin would ever replace fiat, it is not just not possible, bitcoin is pegged to USD and that is why it can't do that. The reality is that we are already using bitcoin a lot to move money around, someone from USA sending bitcoins to someone in Pakistan for the work they did etc etc is still being done and has been a thing for a long time, but USD is much more than that, USD is not a way to send money away to other nations, it is not just an international money transfer method, do not consider dollars like that, that's paypal that you are thinking about, bitcoin is taking over paypal type of business and all will be gone in the future because of bitcoin but that's it.
Fiat is way too important to give up, especially in a nation, international it may change but within the nation it will always keep its power because of the governments.