For me it's the asteroids. Having space being so densely populated with procedural asteroids is immediately, irreversibly immersion breaking for me. Like... space would be opaque and life on these plants would immediately cease in a cataclysm of bombardment.

This was also one of many gripes I had with Starfield.

I think you gotta set aside some of that to enjoy both as Sci-Fi games, not space sim games. In Sci-Fi, asteroids are close together and you can shoot them for resources or lose an enemy in them like a dark forest, because those things are fun. IRL, they are ridiculously far apart and not nearly as fun.

It's always a potential danger to one's enjoyment to know too much about something though. :)