this game was good before the story turned into marvel multiverse

[Iscah]

Except... Dissidia kind of is canon? (insomuch as the original Dissidia is basically a loose prequel to the very first FF, despite the presence of characters from other FF games - the rest just have excuse plots to explain why you can have Cloud beat up Tidus for instance or Vaan be utterly destroyed by Shantotto with fire spells).

Dissidia's worldbuilding can be canon inside Dissidia without necessarily also being true in the other stories that are connected in the Dissidia universe. It can be a one-way crossover.

If it gets indicated within FFXIV that Dissidia is canon to it, that would be different. Until then, it can't be assumed.

Wh-what do you mean? I thought all the Scions actually died! I was crying so hard walking up those steps! /s

I knew they were coming back, and I still did cry all through that sequence. They're not relying on you believing it; you just need to accept that's how the characters must be feeling in the moment.

Its a shame that Elidibus' crystal didn't want to do anything like that. I wonder if the memoria, or Azems crystals are capable of that. Just being like a force of nature, almost a god-archetype character if you will, to just mcguffin itself all the time.

I'm not sure what crystal you're talking about, that you would expect a similar response from.

Hydaelyn's crystal is charged with light-aspected aether. Zero is overcharged with dark-aspected aether. Brought together, they react and cancel each other out.

Different crystals do different things. As discussed earlier, Azem's crystal seems more like an instruction booklet for the summoning spell than any sort of power source.

The fact that we used hydaelyn/azem's crystal to purify zero in another world that she doesn't even want to save is wild to me. This is after y'shtola told us not to use the crystal way before we beat meteion because it had little power left.

i forgot to address this earlier from the OP.

From memory, Y'shtola telling us to not use the crystal at that point has nothing to do with it having little charge left, and everything to do with what the Scions' sacrifices are doing. They're changing the dynamis-based landscape to an aether-based one and making it something we can interact with and air we can breathe. Summon them back, and we're left floating in space.

It's only once we summon Hades and Hyth to work stronger creation magic over everything that we no longer need their aether supporting the world, and can safely bring them back.

In any case, we were saving the limited charge in Hydaelyn's crystal for that moment, and now that moment has long passed, and if there's still a bit of charge left in the crystal then we can use it (or it can spontaneously use itself) on anything it seems worth using on.