How your investment porfolio reacts to a change in monetary policy has nothing whatsoever to do with the utility of your checking account.
Trust in centralized financial institutions is not a problem. In fact it's is the opposite of a problem, it's an enormous benefit. Centralized financial institutions with government backing ensure the availability and safety of deposited funds.
Nobody has ever had their bank account drained in the US since the introduction of FDIC in 1933. In the last 10 years alone, over a billion dollars in bitcoin has been stolen out of people's wallets by hacked exchanges and smart contract exploits, money that can never be returned because blockchain is irreversible by design. Does that really sound trustworthy to you?