There seems to be something paradoxal going on. WDW at once does pander hard with retro, while simultaneously eradicating its past.
Or maybe Disney is losening ties with the person Disney, gone for half a century this year. Walt's movie removed from One Man's Dream, his private office returned, his first name dropped from movies. And no desire to rename the ship in honour of his wife.
Pity, that would add so much history, depth, a link with Walt. Lillian personally christened the ship named after her. WDW doesn't have to build a fake history with convulated backstories. It has half a century of history, which in itself is rooted in decades more of a mainstay of American popular culture. That is unique, other theme parks forever look like the knockoff because of it. Any yet, TWDC mistakes it for silly sentimentalism rather than as a unique asset.