Good question. They apparently joined the forum recently, posted some stuff in only a few threads, then edited all their posts out of existence. Nothing to go on except the post history, so we can only blindly speculate at their motives.
EDIT:
Well, this story is a kinda sad one. Turns out they started another thread about creating a DF clone, the community jumped aboard with lampshade hangings, pitchforks and torches, and burned it to the ground from all appearances. Then they probably quit the board.
EDITEDIT:
This particular passage, buried in a quote, survives on:
"You know what an artist is ? right ? makes the UI and the graphics. Artists are just that, ignorant of community forums etc. We are good at ... who would have guessed .... art. We try to make dreams come true and have an immense fun in making people happy with our fun. However I find enough forums I am welcome in and where I get a good communication with people.
Artists get approached by many people and have to adapt to many gamestyles, from RPG to shooters, from strategy games to platformers, from coverart to endless runners ....
We are mostly busy to find a good style. Most artists take money for their work, but more often refuse work they don't like or that does not inspire them.
It is true, i am not the type that plays DF and Gnomoria and what not. But I never made art for any game like that and I felt challenged by it and so I decided to accept the challenge.
As an artist this is not the only project I will be working on. The programmers will be fixed on the project. We are more interested in essences that count for people than for details. So burying too deep in single non artistic forums is the death of an artist. However many forums like artists anyway because we are also less political or game oriented. Some people don't mind usnot to be so deeply buried in, because the upside is, we also often do things that make people happy in topics that do not interest really, But we like to feel we made someone happy. To make a image of Balin for example I don't need to be in Tolkien forums. I just need to hear the essence about the character. rom one perso to make that person happy with their individual view of the character or from a group to make a group happy.
After all I said sorry and explained my error, and now come on and admit that I made your day in shooting against me "
So, in summary: Guy comes in, posts about DF clone/attacks DF, gets roasted, is awkward and unhappy, leaves, erasing all traces in his power. AND NOW WE KNOW THE REST OF THE STORY~!