First, no theory about dark matter proposes a supernatural nature (in other words, no one suggests that dark matter is outside of and unaffected by the laws of nature). The only statements about dark matter are that it is mass which is difficult to detect. Second, no one suggests that we should worship dark matter.
Very clever.
Given that we do not understand all that there is to understand about "nature", now apparently to include THEORIES which have existed for centuries like the Theory of Gravity, isn't it possible that that which we consider "supernatural" is in fact natural, yet unfathomable? In fact, wouldn't flatlanders consider objects with depth to be "supernatural?"
Have you seen any of the Heavy Metal bands lately? ;-)