Eorzea has much Light? How?

[Kallera]

But the WoL has turned Doma and Ala Mhigo into warzones. Before the WoL arrived, it was a place of brutal order and instead turned it into a hotspot of conflict. While WoL has imposed order on Ishgard, the next expansion was about removing order from far off lands. And the Ascians are actively fueling conflict along with the WoL so I don't really see the problem the WoL is causing in terms of "balance".

We did? Honestly those battles were pretty short lived, in fact, in relatively no time at all we’ve turned 3 backwater nations struggling against their primitive neighbors into a force that is beating back a technologically superior opponent at every turn.
At EVERY turn. When have you heard of Garlemald actually winning a battle?

1000 year war against dragons? Done in by our hand.

Ancient sleeping gods/mechs/beasts of destruction? Dead at our hands.

Implausible plans like to kill lesser men? Done with our hands.