I'm wasn't one of those people saying Old Gods can never be killed even back then nor am I a flat earther lol. Just giving them a defense since back then the Old Gods were kinda mysterious and was debatable whether a Pantheon could defeat them 1v1 so I can understand why some might think that. As for the flat earth crap, well we don't really have absolute proof since we didn't see it for ourselves, only been told.
I'll agree that Deathwing took the most preparations for.