The problem is the game is hand drawn, by one artist. Even if he's not going full animation for the scenes, it still takes a lot of effort. Not to mention trial and error in figuring out how the scenes should be drawn. And you have to finish writing the scenes first before you can even begin to draw them.
Also, you forget that he wasn't working on the game full time when he first started it. It took about a year before he reached the point where he could quit his day job and focus on this full time. Than he also had an accident where he injured his drawing hand/wrist and couldn't draw for a few months.
Right now a lot of people are satisfied with how things are. But what about the future? Who knows. Maybe Bread will push out updates faster after this one? Maybe not. The only thing we can do is just watch and wait.
