I am no Bob Iger sycophant. I know he's not down in the weeds designing things. But he is not completely hands off either. Why else would Bob Weis call Bob Iger his "creative North Star" if he was completely uninvolved? You're right that tours can be for PR, but they also can have practical results. This ride is really important to get right. And Iger was personally invested in it. It's been widely rumored that Chapek was uncomfortable with the cost, but Iger proceeded anyway.
Moreover, we know he toured Walt Disney World for extended period of time last year. He took the time to tour the new Moana attraction before it was open for example:
Disney CEO Bob Iger shares a closer look at Journey of Water, Inspired by Moana, at EPCOT during the 2023 Disney Annual Shareholders Meeting.
disneyparks.disney.go.com
It's not at all unbelievable to think that Iger would have personally visited the Tiana ride too. Especially because it's much more important relative to the B Ticket water walk through attraction.
And good catch on the Poly. I should have specified theme park spending!