Some people seem to think there is a whole team of people working on games like this. I don't know for this particular dev, but in most cases, except maybe some of the big ones, there isn't. There are no subs, it's just one dev writing it, rendering it, coding it. So if the dev has a flu, developement stops for a while. The same if he has real life obligations like having to earn a buck for living or if he simply needs a break.
Being a developer myself I know that releasing every two/three months is more than a full time job. It takes much more time than most people would spend on their jobs. Please, give the guy some space.