The story of the failure of Silicon Valley Bank is the story of nearly every bank failure. Fractional reserve banking invites the risky behavior that brings down the banking system.
Even if Powell is sincere in this stated desire to slay inflation with more rate hikes, recent bank failures will put the Fed under enormous pressure to end its rate hikes and to once again embrace easy money to save the banks and Wall Street.
Keynesians and fellow travelers hold the Phillips curve to be sacrosanct. But because the Phillips curve cannot establish causality, it is useless as economic theory.