That's certainly part of it, but if you look at what Alice has said about Morek's attempts at playing the patriarch to the poor benighted realms to their south, that's a very real concern and frustration. Since the founding of Dwilight, there has always been at least a shadow of Morek's power looming to the north, warning Lurians not to dare to become too powerful, or stray beyond what they find acceptable, or they'd come and punish Luria for it.
It's time to end that fear. Or die trying.
That seems overly dramatic. I imagine that if Morek tried, it would end almost (though not quite) as ignominiously as the attempt by the northern realms to fight Aurvandil. From an IC perspective, I suppose I can see it, but I suspect the reality is that neither side would have much success marching against the other, unless they met somewhere in the middle (lucky Swordfell).
