I think they are referring to the fact that if you disable artilleries/minefields in the indevo settings, the ones in Rubicon still spawn regardless.
Ah, okay, I could look into that maybe. Hadn't considered there being an IndEvo toggle for that
I really hope this back and forth between sharing mod functions wasn't something intentional to "make players suffer" because its funny. I've already seen another part of the "collaborative interaction" in IndEvo with the Legio Infernalis, and honestly looks like it could be very interesting or very "Force you to play the game a certain way", depending on how its integrated.
Legio system is very much intended to be a fortress, being a boss lair and all, and using the IndEvo defenses is my preferred avenue for that since, unlike planetary shields and the like, it offers more interactive counterplay rather than just boosting the stats of planets further etc.
And "making players suffer" is just a general design aspect of Legio being intended as a dedicated challenging OpFor, which is why it's optional in its entirety.