[Spoilers] Is Hydaelyn a primal?

[Malkria]

I think the biggest difference is the flow of energy. Other Primals drain the land from aether whereas Hydaelyn gives it freely, she's the source of it all, including our monstrous strength.

There is no evidence she isn't though. Consider this, if you have one small pipe draining a pool from the deepest region, how long would it take for you to notice? As compared to many small pipes all draining from different sections of the pool? It might just be that we haven't seen her effects....or maybe we have. The Garlean Empire might be in the 'shallow' section of said pool, and explain why they can't use magic unlike the rest of the world. It also might explain the burning hatred they have for primals, even if they might have forgetten every reason why. But a primal draining a land to the poin't it's people can't use magic? That would be a very good reason.