Just my two cents, but what I think the "problem" with this whole thing is/was, is that they announced it at the wrong time (2020 societal pressure, pandemic, etc.), when it was still relatively early in it's idea infancy. Even with the parks being closed and it being an ideal time to start a re-theme, the scope of such an undertaking meant they simply weren't ready, or financially stable enough, to hit the ground running, hence why Splash is still operating daily.
Now, as things are finally starting to steer back towards "normalcy", everyone is clamoring for "proof" that things are still happening, when 99% of the work is still being handled behind closed doors and in Zoom meetings. I know its frustrating only being given a few bits of concept art here and there... and a "round table discussion" that didn't really give away new information... but that's just the reality of the situation.