Knowing how cheap shipowners are, once they spend the extra money to build the automated ship to eliminate Mariners they will be just as cheap with repairs. No mariner to complain, just ignore problems longer. We also notice many issues before they’re real issues. Vibrations, condensation, stuff there’s no way a sensor will detect or deal with. And when Joe boss gets the message saying there’s a vibration he will certainly ignore it until the ship breaks down with nobody aboard to fix it.
We know how well dp3 worked on the aiviq, and these non dp cruise ships with redundant engines rooms