I will say it again, if this guy was Russian people here would never give him the benefit of the doubt and the thread would be considerably more aggressive towards the scammer. But since he is an American con artist instead, people think that whatever he says isn't a total lie by some weird reason.
People get disillusioned with Russian games very quickly. They're repetitive, have no original story and the Engrish is so terrible that it pulls you out of the game constantly.
Plus it's obvious that they are only after your money and have no interest in making the game (if they can't monetize it after 2-3 months, they pull out).
In comes Gumdrop and makes a game that has different graphics (makes use of sparse backgrounds, uses background defocus, graphics are consistent, though he definitely overuses Dutch angle), an interesting story, believable characters, good English and the developer engages with his supporters constantly.
He filled the demand with promises of a game that was not present on the scene.
In hindsight, it's no wonder that Dual Family succeeded in pulling in so many people, for better or worse, and now people are hooked on it and hoping to get it to completion.
In the end, I suppose that this is the only remaining motivation driving Gumdrop's supporters to throw money at him. They think if they pull out their support, Gumdrop will abandon the game and it will never get completed. At the same time, continuing to support him makes him complacent and he'll never complete his game anyway.
I think the best option for the game to get completed now would be if somebody messaged Gumdrop and licensed his intellectual property for a share of profits (50-50 would be generous to Gumdrop) and then completed the game as Gumdrop intended (in 21 remaining installments).