Correct me if I'm wrong... but from the looks of it, this is more of a pre-alpha type of thing, but I was told that he was putting a lot more into this. a kick-starter would be nice; right now, however, all we have is his PayPal account which is "firstname.lastname@example.org" if you don't believe me, just look down 17 comments/ replies.
The word Demo comes from the word demonstration if it a pre-alpha, alpha or a beta doesn't matter it's still a Demo. Besides, I can only give info out from the demo since I don't own or don't know what's in the final version of the game since to what I know off, no info is giving. Besides he doesn't need a kick-starter, he can use patreon like most people do today or use https://www.indiegogo.com/ I know many use that one too as a Kickstarter. I'm already Contribution to a Campaign called Them's Fighting Herds on there, so there are many ways to do it. Also, I know his Paypal already I did read all the comments on here.