i guess yeah, there is no visual proof. but enough people have said that it looks to be shooting for a finishing date of September/late 2022 and that they want to open by early 2023 that i'm pretty convinced there is some truth to it. they'll def want this open before new toon town, and enough info has been corroborated by different sources that i don't see why it won't be.
At the end of the day, this is of course speculation and it's just a bit of fun. There are little hard hard facts to guide us one way or the other, but current evidence pushes a certain way, so why not have fun making guesses? Why do we need total proof? As long as our expectations of this not being definite or in check, there's no harm in my opinion.