We talked about this years ago. This is very much taught in the PRC (and I believe Taiwan for that matter). I specifically gave you examples of standardized tests that go over this material.
You seem to be conflating "someone taught it at a university" with the apparently well evidenced view that Lu Xun's overwhelming coverage in popular media and secondary schooling neglects to point out his anti-character stance.
Luxun's works and opinions are far, far less well known in Taiwan than in the mainland.