Nope, that's not the reason they're burying the Galactic Starcruiser.
Disney itself released multiple press statements in November and December that said the Galactic Starcruiser would be featured on the Disney Parks Christmas Day Parade TV Special. From the PR department to individual media outlets, to the public-facing Disney Parks Blog, the Galactic Starcruiser was on the short list of upcoming projects that would be featured on the TV special.
From the Parks Blog Post on November 19th,
before the horrible reaction to the cringey and cheap product began...
"Both holiday specials will sparkle with holiday cheer, offering heartwarming moments and exclusive sneak peeks at what’s new around The Walt Disney Company. Viewers can look forward to a sneak peek at Star Wars: Galactic Starcruiser, opening March 1, 2022, at Walt Disney World Resort; a trip on board the all-new Disney Wish from Disney Cruise Line; and special looks at Walt Disney Animation Studios’ “Encanto” and Steven Spielberg’s new film “West Side Story.” As part of The World’s Most Magical Celebration, commemorating 50 years of Walt Disney World Resort, every touch of holiday magic will be an extra special, EARidescent treat."
All of those things happened on the TV special, except for any mention of the Galactic Starcruiser. It's been cancelled and shoved down a memory hole for some reason.
It’s the most wonderful time of the year as ABC and Disney Parks bring the magic of the holidays into our homes with holiday specials hosted from Walt Disney World Resort in Florida and Disneyland Resort in California!
disneyparks.disney.go.com
From a Press Release about the Parade TV Special on November 30th...
"it will include plenty of promotion for Disney projects, including the new Star Wars: Galactic Starcruiser hotel at Walt Disney World, and the movies Encanto and..."
The holiday season is already here, and the best way to tell is by glancing at the television [...]
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