I think there is a huge difference between NASA trying to find a viable rocket design for manned flight and building an aircraft carrier - they already have designs for catapult and arresting systems that are much more reliable and cheaper than the new ones they decided to try out on the new class of carrier ( and using the same metaphor with NASA, they chose a company that had never designed a rocket engine to design rockets for manned space travel to put on top of a Saturn V stage 1), and if they continue to stick with the new unproven designs, they won't be able to deliver for many, many more years, if ever.

If they had stuck with the proven design with just improvements, they might have been able to deliver the ship three years ago on time.

The new electric only system means they committed to not routing steam from the nuclear power plant to the catapults so that would be a major retrofit for that one completed new style carrier. The new electric systems when they do fail, they disable the entire catapult launch capability of the aircraft carrier, the contractor made a really poor design decision here that they apparently cannot fix. The steam catapults can be taken offline individually and worked on, leaving the others in service.