i assume that means no post game, right? cause there are moons with cutscenes after in mushroom kingdom, dark side, and darker side.

Yes. The idea is you can't skip the ones you would in world peace.

Can we add Madame Broodal to that one, making it all story moons and fights?

Actually, I'd associate "full story" with including Klepto and Moon Cave. OpieOP

Clipping is not allowed because it allows you to skip single mission moons, is that right? If so, then why can't it be allowed for taking a shortcut in Power Plant?

Clipping is not allowed because not clipping is a legacy obstacle. See All Story Moons as a legacy category.

Okay, Thanks!