I think he shouldn't have done it through Noct's eyes then if interesting side characters get forgotten about
How would Noct know about Areana anyway she fights him in Chapter 6, this is the intro to Chapter 3 what the hell.
Also how the hell would he be aware of this or
wasn't the entire time, thinking Ravus was going to kill his sister?
If they really wanted to keep it within Noctis' eyes or mental state, and convey that to the player remove scenes like this, or better yet don't do it at all.
Also FFX was pretty much Tidus' story yet, we saw the world, the lore, and the characters get developed, and it was pretty much through the eyes of Tidus, most of the time until you would switch to Luna.