I mean, even when they announce something is coming, we know from experience that doesn't really mean it's coming or that the visuals they show for what they have green-lit will actually end up as part of the final project but when they say something is happening, they're at least saying it's happening.
With these kinds of announcements though, they're not even pretending it's going to happen. They're just saying it crossed their minds and the internet explodes with chatter about what they are certain will be.
How many pages did that Moana/Zootopia thread get to? We on this forum probably collectively thought more about how that was going to work than people being paid by Disney actually did.
Anyway, they've probably got one or two more wacks they can take at this before the voggers finally stop trying to kick the ball and at that point, it'll be 2025 or pretty darn close to it, right?