Its just what they needed changed. In 2021, there was more demand for another Carnival ship. Remember how it was supposed to get a new funnel, whole Sunshine transformation, new name. But then things changed with Australia not yet restarting, Ecstasy and Sensation "needing" to leave the fleet. Then the need for the transfer changed. Now Carnival needed a new ship to fill in the hole, as Spirit moved to cover Freedom, Freedom to Elation, Elation to Ecstasy. Magica wasn't the right fit for Australia and Alaska. Even with the full Carnival refurbishment (which Carnival was in no financial position to afford) Magica would have been more of a Caribbean ship, to add new cruises. They then looked at a ship that was a better fit. Luminosa! It being a Spirit class made it great for Alaska and Australia. So there is nothing wrong about Magica, only what was needed was changed and Luminosa is a better fit.