This works for me, however, instead of looking for the device `TPPS/2 Elan Trackpoint`, I had to use the id of `TrackPoint Keyboard 2`. The downside of this fix is that pasting with the middle button does not work anymore.
X. Zheng, C. Dan, B. Aragam, P. Ravikumar, and E. Xing. Proceedings of the Twenty Third International Conference on Artificial Intelligence and Statistics, volume 108 of Proceedings of Machine Learning Research, page 3414--3425. PMLR, (26--28 Aug 2020)