Yes-ish. In a serious fight against a peer-ish level adversary, the RoI on such a ship looks very dubious.

But short of that, a huge warship can have great prestige & intimidation value - assuming that it is competently designed, and built, and outfitted, and operated. Naval history is swarming with only-on-paper designs for big warships. And a fair number of real-steel warships which were cripples, glass cannons, or sitting ducks because of incompetence somewhere in that chain.

(Also, the USN is referring to it as a BBG, not BB - https://www.navy.mil/Press-Office/Press-Releases/display-pre... )