It had:

Navy ships constrained to small areas to prevent disruption to commercial craft which would never be the case in an actual war

Small boats firing simulated cruise missiles weighing significantly more than the entire boats supposedly carrying them.

Motorcycle based messengers "simulated" by just using radios except no one bothered to add any kind of message delay or any other kind of constraint a motorcycle messenger might have compared to radio communication.

USN ships in the simulation teleporting into the center of a massive armada of simulated small boats due to a modeling error

All ship defenses being turned off during the engagement resulting from said error because everything was in the wrong place.

None of the USN ships even knowing that they were supposedly under attack until the "battle" was over.

Ships being "re-floated" as a result of the above screw up

It's generally unwise to try to draw any conclusions at all, positive or negative, based on its results. Also, there's a reason countries all over the world continue to build aircraft carriers. It's because they're useful. A carrier group essentially controls a moving sphere of territory with a radius of around 500nmi. Being able to launch dedicated AWACS[1] allows for far superior battlefield awareness compared to any other naval asset and air launched anti-ship missiles allow for striking range far greater than any other naval asset. Carrier groups are also a lot harder to find than you might think. Nuclear powered carriers are fast, faster than almost any other ships, and don't stay in one place. Keeping tabs on them is difficult, even if you have satellites. In the open ocean they're very difficult to confront because they will almost know more about the locations of opposing forces than the opposing forces know about their location thanks to real time aerial recon. The horizon is as far as radars can usually see and if you're in a plane that horizon is much further away. Carriers are not going away any time soon. They provide far too much utility which is not offered by any other kind of ship.

[1]https://en.wikipedia.org/wiki/Northrop_Grumman_E-2_Hawkeye