Sure, dark matter is only a working title for whatever's going on out there that isn't predicted by current theory. So what? The current theories explain everything, perfectly, right up until we hit that scale (which is pretty big), at which point they need a single, simple assumption: "There's something we can't see which otherwise acts like matter, just there." before the predictions are accurate again.
There's no formulation of FE that's in the same ballpark for predictive power, none that's even playing the same sport. In fact, to my knowledge, there are no FE ideas that have any predictive power whatsoever. If there are, I would love to hear about them.