about the centra thing, the place was gone and forgotten about rather quickly, wasn't annihilated by a lunar cry?
also apparently Dollet used to be in charge of the whole continent but now it's split in three and no one mentions that?
Dollet probably is probably not the only place where NPC dialogue doesn't change.

that said FF game seem to be notorious for badly thought out back storys, after all in FF9 they claim that within a 1000 years of Gaia being born there was a thriving population on the planet?