EzekielRaiden
Follower of the Way
I see completely identical causality relations in these two things.What is happening that there is a die roll that determines whether the thing succeeded or failed followed by description of the event of success or failure. Almost all skill checks and similar work like this, and there is not anything retrocausal about it, the narration and the dice roll are the same event.
But like I have said many times, the issue with the runes is not that it is retrocausal, but that it is acausal. What is happening in the mechanics and what is happening in the fiction are disconnected, creating divergence in decision spaces. This is not some trivial technicality, but something has an actual observable effect on how the game will be played.