I disagree with you here some. If you mean that how they executed everything, I'd agree with that. But if you are talking about them using the ST as the basis, I don't think that was the issue at all. I think the issues were a combination of the concept and the execution. Yes, the videos were widely mocked, and the 2 nights is dumb, especially with the whole day at DHS. But, there are a large number of people who want nothing to do with all the interactive stuff. Anecdotally, I can tell you my daughter would have gone NUTS for the ST stuff in the hotel. But, the price point made it tough. Your being almost forced to participate in the weird story stuff to have anything to do was a 100% no go for my wife. The Adventures Club was the deepest pit of you know what for her.
To me, it's always been a concept issue that was exasperated by how they executed it. It's too short, and doesn't convey anything to me other than a make your own adventure story. Make it a 4 day cruise. Have shows, have a pool (indoor pool with almost like a planetarium would still print money in my opinion), multiple bars, variety stuff, kids club. Have excursions. Have optional excursions to Batuu, or get crazy and say day 1 you stay hovering Earth and send them to Magic Kingdom if they wish, then you take off, Day 2 in space, Day 3 in Batuu, Day 4 home. Heck, sell excursion packages like a real cruise (tours, etc.), there's EXTRA money. Obviously, we are past making almost all of this a reality at this point, but bottom line is I think the concept is off as much as how it was done.