
Originally Posted by
YianKutku
I figure that sequence was meant to illustrate (with the subtlety of an anvil, but that's standard for FFXIV) that even if the desire to become Warriors of Light to help people was initially prompted by someone with ulterior nefarious motives, it is still a good and noble desire to want to help people. Alphinaud mentions as much after the grape-picking.
While I'm positive that is the case, I think the other reason for it was to compare them to the more extreme case that is Elidibus. The kids look up to you for all the things you've done and wish to emulate you by becoming Warrior's of Light as well. Elidibus admired the First WoL enough, stating that even though they where sundered, they had fought for the world's salvation, for hope. He then proceeded to become like him by literally becoming him via possession.
This comparison makes sense to me with the reveal that Elidibus was a child when he became Zodiark's heart, as I took his appearance at the end of the MSQ to be literal instead of symbolic as it fit with the fact that Zodiark was kept as a child in FFXII, so why not his heart actually be one in XIV (he also looked shorter then the other Ancients in the Echo from his perspective).
Speaking of those kids, if you talk them after the MSQ, specifically Arkil, you find out they have the Echo too. They heard Hydaelyn, but they couldn't understand what she was saying, just that she sounded nice.
I'm not the best at articulating my thoughts, so I hope that made sense?

Originally Posted by
Iscah
Someone elsewhere pointed out that the two stones he's holding at the end are Lahabrea and Emet-Selch's. I haven't double-checked that for myself, but it's a nice detail.
While one of them is Lahabrea's, the other one is actually Igeyorhm's (the green one). Makes some sense to me as it wasn't till after their deaths in ARF that Elidibus actually started seeing us as a problem. And I've seen elsewhere that someone checked the files, and that the two ancients talking to him in the Echo where labeled as them. So he was quoting them as he died.