When the cutscene takes up time from the fight's time limit, it's a problem. It seems to me that the solution should just be that the first time you interact with a quest node that activates a fight or a dungeon you see the cinematic without actually entering the fight. That way you can watch it in the context of your adventure, then enter the fight afterward without penalizing your group.

Or, for fights like to kill a raven with cinematic events in the middle of the fight, the timer should pause and no one can skip the cutscene until everyone in the group has made the choice to do so. That way, again, the group isn't penalized for enjoying the cinematic.