I agree with this as well.
I do believe Disney is building the ship with the intent to homeport internationally...they ship was built originally for Asia, and they even admitted this we their plan in the announcement when they bought it, saying ot was for new markets overseas.
I also 1000% believe
DCL is intending to make the ship ready to sail in North America, possibly seasonally or for an extended period of time. They aren't stupid...they have seen other cruise lines build ships for Asia, and had to pivot to an American market for one reason or another (Pandemic, economic, Political, etc). I wont be surprised to see this ship sail from FL at some point in the future, even if it isn't a permanent homeport.