Fractional reserve banking is literally a ponzi business model. If everyone wants their money at the same time no money is to be found. Similarities to Silvergate involve the banks having to liquidate bonds at steep losses to fund withdrawals. The effects of interest rate hikes combined with human psychology around the illusion of confidence in a bank.

imo this isn't a crypto thing but a systemically fragile banking thing...literally the reason Satoshi invented bitcoin - Chancellor on the second brink of bailouts