Welcome to Hacker News. This project was written by a fellow HN user for fun. I think it's pretty clear, based on the quality we've seen so far, that the author is capable of making it do all those things. I like to judge projects and startups by envisioning their completed state, rather than worrying about details of how they exist today. I think DitherPaint is a cool project and worth encouraging.
Wait, do you actually know the author? I only ask because he's a good friend of mine, and another friend was just showing me your APE code. Small world. :)
Not to my knowledge. I just saw a random comment in a different thread: https://news.ycombinator.com/item?id=27410662 I noticed he had submitted it as a link that no one upvoted. I thought the work merited further attention, so I posted this link.