What if they don't intent to turn on the printer and will use the lack of money to take full control? Yes, they will destroy the economy but I think the past proves they have no problem doing that as long as they can keep control.
The FED will only allow liquidity to flow to your banks if the banks prevents you from (buying Bitcoin or) taking cash out.
Keep an eye on their beta test FedNow. It will be too easy for them once it's implemented. I feel like it's going to be harder than a lot of us (even in Bitcoin) expect.