This guy's a grifter.
He'll deliver the bare minimum while stretching his projects out to leech off as much money as possible from anyone that supports him. When the support for his projects inevitably die off, he'll launch a new one to bait new unsuspecting supporters.
I wouldn't give him any money. In fact, his stuff usually isn't even worth pirating due to it being so lacking in any semblance of effort or quality. I will be extremely surprised if in 5 years this game isn't an unplayable buggy mess, if not outright abandoned.
I don't know if this guy is malicious, lazy, incompetent, or all three at once.