Yes, does seem to fit with the concept of illusion. When I first saw this (a few weeks ago), I could only see her spinning clockwise, and then suddenly it happened, and she was spinning in the opposite direction.
"The image is not objectively “spinning” in one direction or the other. It is a two-dimensional image that is simply shifting back and forth. But our brains did not evolve to interpret two-dimensional representations of the world but the actual three-dimensional world. So our visual processing assumes we are looking at a 3-D image"