All the evidence points to it being a scam.
Now if you refuse to see what's there, then by all means, donate away to your heart's content.
But just remember that you were warned and that you let your greed get the better of you.
I also noticed that Dave has locked the Stone thread but by some Miracle, there are some posts from noob accounts that are all singing the praises of his "project"
They must have great timing to be all posting the very second he "unlocks" the thread.
BTW, there's another thread now called PAPER:
https://bt.irlbtc.com/view/2675475.0If you have money to lose, be my guest.