More or less. Though unlike in Dragon Age, the only ones who are threaten to be taken over by demons are Demonmancers. Not to say that other mages can't be possessed, but it's easier with a Demonmancer. And from my understanding, the issue in Skyrim is simply that the Nords don't like magic. While there are some places who think like that, the Twilight College and it's areas don't share that sediment. Though a hatred against magic could be used as fuel for their eventual destruction. Maybe. Depends on how you guys play your cards.