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.
That’s usually because they’re referring to the Phalanx CRAM system, which is a derivitave of the Phalanx CIWS system used by the US navy. The two look extremely similar (for obvious reasons, they share many components) and often the CIWS label is (incorrectly) used interchangably to refer to both systems. CRAM, which for at least the last fifteen years has been deployed on Navy vessels operating close enough to a coastline that the whole “swarm of drones” tactic is a feasible threat, is more than capable of engaging with those threats, and has repeatedly demonstrated that capability. It’s massively expanded magazine capacity, cheaper ammunition and (greatly) improved mechatronics on top of a more-accurate-at-engagement-range weapon are extremely flashy, but also extremely effective.