Originally Posted by
CrownySuccubus
To play devil's advocate, I don't think this would be the case.
FF games have a fetish for "last time, the good guys could only 'seal' the villain away, but this time, these heroes are going for broke and either the villain dies or we all die". Which is, basically, what Venat did. She decided sealing the Final Days wasn't good enough and that the objectively good thing was to sunder the world so that there was even the smallest chance killing Meteion was possible.
At least, that's the story's logic anyway. Still would've been smarter to tell people Meteion existed.