It means exactly that when it comes to ATM posts. The ATM forum description reads: "Post here if you want to discuss a theory that goes against the astronomical mainstream." So, two points:

1) Over all, this board has a space and astronomy theme. There are a few diversions, but most of us are here for discussion of space and astronomy.
2) ATM is bad enough as it is. Opening it up to a biology topic that most of us here are not fit to defend is a bad idea. Additionally, the evolution forum would further perpetuate the way-too-common misconception that evolution and cosmology are linked (if not the same thing).

To me, your comment sounds like a straw man. After three years and more than 7,000 posts, you should be aware of most of the times that members (including moderators) have pointed out that this is a space and astronomy forum, and that your proposed evolution forum is all kinds of wrong.

Edit: This post was made without reading post mugs' quoted post.
A quick additional point: changing around subfora locations has been proposed before and nothing came of it. (This was noted above.) You're wasting your breath, mugs.