Since the Mayans didn’t save themselves from their OWN extinction( assuming they successfully predicted it) it does seem more than stupid to trust their precognitative abilities regarding ours.
If Mayans were that prescient, there would still be a Mayan civilization.
The Mayans didn't predict the end of the world in 2012. It's the renewal of their Long Count calendar.
There still IS a thriving Mayan civilization in Mexico, Guatemala and Belize. Modern Mayans just don't live in city-states run by bloodthirsty warring kings. Their ancestors had the good sense to walk away from all that and let the kings fend for themselves.
Greece declined and Rome fell, too. But I don’t hear anyone arguing that those cultures weren’t “smart.” The Mayans never predicted an apocalypse, the 2012 event they predicted was a calendar cycle change, much like the change from 1999 to 2000. They were very sophisticated about some things — astronomy, math, they developed a written language — and not very sophisticated about others: they never figured out how to make use of the wheel, although they were familiar with the concept and created wheeled toys for their children. The Mayan culture was like all human cultures, smart about some things, not so smart about others.