Bring back Glass Steagall and stop all this madness. Regular banking should be boring, not all that profitable and separated from speculation.
By all accounts, SVB's banking was boring. They borrowed short and lent long, and their long bets were very safe. The problem wasn't that they too exciting bets; its that they played the standard playbook incompetently.
The best spin I can think of is that they assumed HTM was sufficient to prevent a bank run, but it wasn't.