Earlier quoted context omitted.
The difference is that you’re not pustulating teapots on moons. You’re looking at real phenomena or projected ones (galaxies colliding) and asking how it can make sense within panpsychism.
One of my issues with panpsychism is the question of causation. The behaviours of particles can be entirely explained in terms of physical dynamics, there is no behaviour left that needs explanation. If they do have experience, it doesn’t seem to be causal in that it doesn’t seem to have any consequences. We’re not quite there yet with galaxies, but there doesn’t seem to be any problem with doing explaining their mot…
Except we do see multiple inconsistencies at a galactic scale. The hubble tension, the absence of explanation of dark matter, the models which point to 75% of fundamental components of the universe being unobservable? There doesn't seem to be a direct extrapolation from our models to galactic-scale explanations.