It's not. You seem to be confused when
@pemerton said you said things, but it doesn't seem to have extended to your own attempts to do so. I've always been very clear that who gets to author what when and how is a key differentiator between games, even between very similar games. The argument you're smashing into this is that the act of authoring anything in fiction is largely the same, that the differences are who gets to author the things. The difference, as far as authoring fiction, between a orc being hit by a sword and a forge being under a nearby glacier doesn't exist -- in both you just imagine something and share it. The difference in RPGs is how this kind of exercise of imagination is constrained. Such differences in authority and constraint exist are the backbone of my arguments. You having a large mistake of understanding here reveals a good deal about how this conversation has progressed.