Technically speaking, no celestial body in our solar system orbits around a single point. The barycenter thing only works with two bodies. When there are more than two bodies, such as in our solar system, the orbits become chaotic. Granted, the influence between planets is small, so they all appear to orbit their barycenters with the sun, but there are small perturbations to the orbits caused by the locations and masses of all the other bodies in the solar system.
Unabomber was 30+ years ago, and he explicitly identifies the left with society’s problems
Here is a nice summary of how the Unabomber (and apparently the author of the article) perceived the left:
https://medium.com/@eric.johnson7654/i-agree-with-the-unabomber-about-leftists-4cc100896e64