Everything is okay except their timeline. they are taking too much time to deliver the product to the masses.
For what promises the project, it's normal to be a long-term one. It takes a lot of work on the whole structure of the project. You need an army of people, money and time to complete it. I think it's worth it.
i believe the whitepaper will also point out why is going to take that long, probably not everybody has a clear picture yet of how challenging this project is.
I don't think there is need a whitepaper to understand why it will take that long. Even with the current information, it shows how layered project and how hard to achieve. Still, a whitepaper would be nice.