The Milky Way's disk is warped. Is that because its dark matter halo is tilted?

It's difficult to determine the shape of our galaxy. So difficult that only in the last century did we learn that the Milky Way is just one galaxy among billions. So it's not surprising that despite all our modern telescopes and spacecraft we are still mapping the shape of our galaxy. And one of the more interesting discoveries is that the Milky Way is warped. One explanation for this is that our galaxy has undergone collisions, but a new study posted to the arXiv preprint server argues that it's caused by dark matter.