The UI issue is real, and is a problem, but the root cause of the 7th Fleet's crashes during that time period is lack of training and inadequate leadership, due to an operational tempo that's Thenot sustainable given current funding and ships. Instead of building new cruisers, or taking the time to dry dock and repair these ships, the admiralty has been ok'ing "at sea" repairs, leading to situations like this where primary systems aren't functional and back up systems are run for far longer than intended. The admiralty has been looking for technical solutions to a human problem for about a decade now, becaise they'd rather buy a new set of carriers and the F-35 than build the ships they need to support the mission given to them by Congress. The result is burnout, and incidents like this.

The Navy as a whole has a severe manpower shortage, and in the incident report for the McCain collision I believe it came out that the officer on duty was 17 hours into their watch, and didn't have a full compliment in the watch house because one of the crew who was supposed to be there was off in the lower decks for an unstated purpose (anecdotal evidence from my Navy friends, probably catching up on sleep, or seconded to repair something while they had "non-critical" time).

The collision only happened because instead of being trained on seamanship as a whole, incoming officers are trained how to work the computer systems they're interfacing with. The Navy cut down the training periods as well - instead of training under a senior officer for a few months, to offset manpower shortages, incoming officers are put in charge immediately, and given a stack of CDs (wish I was kidding) to complete their training.

The surface Navy is in an incredibly dysfunctional place right now, and Congress/the admiralty have been paperig over leadership failures by spending more money, and blaming technology