I think their stance on the matter would be rather complex.
While they are Kal'dorei in cousin status only they see the Kal'dorei as a primative version of themselves, to them they define civlisation and the Kal'dorei are just essentially savages.
I think the honest answer would be their stance would be indifference.
Yes, the Night Elves helped their people be free, but they also shunned them for their ways and path long ago even before the rebellion against Azshara.
In short, they likely see the entire thing as a mess taking neither side and abstaining from the morality of it all.