Keep in mind that we once had many battleships in the fleet. They were rendered obsolete by the airplane.
Battleships are very fat targets in this age.
Bismarck and Musashi were eventually sunk by bombs. Then there was the near-successful attempt sinking USS Cole reflecting the potency of asymmetric warfare, and of course current drone technology which, if Ukrainian boat drones are able to sink large Russian missile cruisers, what more with a battleship about the size of an Iowa?
He’s in it mainly for the belief he wants to show a bigger e-peen.
Anytime someone mentions the CIWS in a situation that isn’t about cruise missiles or drone boats I instantly disregard what they have to say.
People like that only bring it up because it’s the only thing they know about and they only know about it because it’s extremely flashy.