From what I can tell, part of the reason people seem to obsess over proving Emet wrong may come from arguments we've had in these very Lore subforums back when ShB was first fresh. We all remember the constant arguments for Zodiark vs Hydaelyn, and how those spilled over into Endwalker after it first came out. There's a lot of bad blood from back then due to several posters who could get obnoxious about things. For some, this may be a final "take that" towards those posters.