What if our character died?

[Fenral]

The first is the rampant Luddism that sprang up after Allag's fall. Causing everyone to go on a technology destroying rampage and much history to be lost (the Abundance of Tomestones are of debatable canoncity), and as I mentioned before those that do not know History are doomed to repeat it. All Garlemald might "know" is that Allag was a technocratic utopia and they they also were able to fell primals without the need for Warriors of Light.

Unfortunately, we don't actually know how much Garlemald knows. The nodes of Azys Lla may joke about their technology, but the fact remains that Nael van Darnus raised the Rivenroad using knowledge passed down in "his" family, and that knowledge didn't come form nowhere. Even the Bozja Citadel, while woefully incomplete, was still functional enough to give Bahamut opportunity to temper Midas nan Garlond.

And then there's Nero, who got the Ultima Weapon working, which ate three full-power primals in one sitting and would have even killed us without literal divine intervention. I'd say Garlemald is doing pretty alright on the "understanding Allagan tech" front. At the very least, better than Cid would give them credit for.

Either way, the mistakes of history are far more nuanced than "advanced technology == bad," and not every action taken for the benefit of all mankind is in mankind's best interest.