Money is whatever people decides holds value. Doesn't matter what it is, seashells, gold, beanie babies, paper. Currency is just a faith based system. Fiat is a complete scam but most people are too stupid to realize or lack any real fight to go against the banks.
to be able to change the bank's decision about bitcoin is very difficult. because the bank has been integrated with all banks throughout the country and has not recognized bitcoin as a currency. requires official recognition from all parties who have authority over currencies to be able to recognize bitcoin as a currency and can be printed like fiat currencies.