All major US banks - and all or virtually all US banks in general - have assets that are designated as held to maturity. Continuously marking all assets to market would create massive swings in banks' income and obscure the real gains and losses from their operations.
SVB probably had a somewhat longer asset duration and somewhat lower book yield than US banks on average, since its deposit base grew so quickly in a low interest rate environment in 2020-2021. It also had a higher share of uninsured deposits. But nothing that SVB did was categorically different than other banks, and in the absence of a government backstop, I'm not convinced that any US bank would fare much better if faced with a similar volume of deposit outflows. "Magically" transforming long-dated assets into short-dated liabilities wasn't any kind of malfeasance on SVB's part - it's just how banking works.