The number of missiles carried on board does not match the displacement of the ship. This might indicate higher survivability; The ship might not get one-shotted by a hypersonic missile. It will also be much tougher against other threats such as subsonic stealth cruise missiles and water drones. Keep in mind, bigger ships are harder to sink, especially if they're not crammed to the brim with ammunition and other systems. And with the increased survivability requirements of the US navy (which caused the constellation disaster in the first place), I believe this new Trump class will be deserving of the classification of Battleship RELATIVE to other modern warships.
Another important thing that was mentionned by Phelan in the press release is that this will be a "command" ship, which could indicate that it might operate in coordination with other manned and unmanned surface vessels, serving as a central "node", kinda like a ship equivalent of an AWACS.
These two points are important in my opinion because it might indicate that the US realized they might never ever match China in sheer number of warships so it is better to focus on force multipliers instead. Phelan mentionned that he consulted with navy admirals and realized that this ship is what the navy actually needs, so it might be related to what I mentionned above. Or it might just be Trump's narcissism dialed to 100. But I found it curious that he mentionned that it was Phelan who came up with the battleship suggestion first, so there's that.
