If you carpet bomb enough people with your stuff, the chance of people show interest in it increase. The skills he lack in proper game development, he seems to compensate for in market himself and his game. I seen links to his game all over the internet, and now recently he push it on steam as well. Not many other creators on this site that does. I know of "House Party", and "Man of the house" is planned too. That tap into a new range of people he normally wouldn't reach. If you look at his recent influx on Patreon, it kinda go hand in hand with the steam release. No idea why someone would pledge after buy it or steam, or maybe they just didn't buy and just pledgded. idk.
If you look at all those f2p(p2w) awful social games on facebook, and such. They about invest as little as much into the actual game, and as much as possible into monetizing process's and marketing to bring in more people to play, which end up with a big swing-door. If you look at graphetron for GD's patreon earnings, you see that pattern there. People replace the ones leaving, not. Not so much long term pledges. Probably similar to the "whale" ratio in f2p games.