So,

All this mumbo jumbo about the World ending that the Mayans predicted and every thing. I get it now. See, the end of the world wasn't coming on Earth...The end of the world was coming to Eorzea. So now it all makes sense. The Mayans and other future predictors are just a bunch of gamers too!

So here is what happened. They were all sophisticated with technology and didn't want to tell anyone. SO, the created ways to unleash this technology. What you have read about everything was just written by the UMEODG (United Mayan End of Days Group), and yes this includes the Twilight books. Turns out the Mayans are all team Jacob. They would randomly leave technology laying around the world for people to find. You honestly thought your cell phone was created by your average human? OH man come on! The Iphone, found strapped to the back of a humpback whale off the coast of Antarctica. The computer, found in a box in some guys garage that ended up taking credit for it.

So you see, Mayans aren't actually humans, well regular humans at least. They are more like the Underwear gnomes. Dropping off technology for us to find. BUT!!!! When the company SE was formed, it was formed by Mayans. They saw this day coming. They knew in the 14th Umbral Era (hint FFXIV) that the planets would align and the end would come. Unfortunately somewhere down the line, the idea that Earth was going to end rather than Eorzea got put out there. BUT NOW IT ALL MAKES SENSE! In 2012 Eorzea is going to end just like they predicted...