there is a centralized bank that is the Federal reserve

and there is a decentralized bank which is Bitcoin

That's an interesting proposition, that was simply unfeasible from a practical perspective until very recently.

A consumer bank needed branches, and tills, and vaults, and all sorts of things to serve customers, so it was just unfeasible for most nation-states to eat the costs of all that - while private entities were incentivised to set all of that up so that they could raise money to invest for their own profit.

Now that money is increasingly a purely digital construct, a true National Bank could actually be feasible at low cost, providing a 100% safe deposit system for consumers that will never pay any interest. Private banks would likely still exist, they'd just provide more incentives to depositors (i.e. higher returns). This would make private banks a bit less central to the whole system, and make society a bit more fault-tolerant in this area.

It's an interesting policy proposition, and maybe talking about it would be a bit more productive than the average thread on banks.

They could put the onus of control of the funds/account into the hands of the depositor and use a CBDC but trust in government is an issue here.