Just going to add my two cents on one point that's been made by Vivienne and on this thread. Which is that by voting to leave Chantry supervision they were behaving naively and selfishly, not considering the consequences their actions would have on the general populace.
I agree that the Magi leadership didn't think through all the consequences their actions would bring, chiefly what Lambert would do in response to the vote. But, has anyone considered that their behaviour makes total sense within the context of the circle system. Bearing in mind that the vote was not to start a rebellion, it was to no longer recognise the Chantry's oversight of them.
The fact is that the vast majority of CIRCLE mages don't interact with everyday people in Thedas on a regular basis, with good reason of course. But this does bring to mind the old adage, 'Separation breeds contempt'.
Normal people, do not make up a sizeable part of any mages everyday life, so how can they expected to have empathy for a group of people, whom they haven't met and in all likelihood wouldn't care much for them if they knew of their 'affliction', and non-magical folk don't understand magic and their fears about it are completely justified.
So on the front of it, it makes sense to just to separate everyone from each other. The non-magic folk are safe from mages and mages are safe from non-magic folk.
Isn't it possible then, that part of the reason we have this crisis is that the Circle worked too well? Not only separating people physically from each other but emotionally as well.
Think about it, the Circles tend to be in isolated areas. i.e. the Gallows, Lake Calenhad, they are also isolated financially as well, as we know that they are run on funds they get by selling enchanted supplies not through funds gained by charity.
All of this reinforces a sense of isolation and antipathy for the 'mundanes', by circle mages. Empathy is created by connecting with people, speaking with people learning about their lives, their dreams and their fears. A circle mage may read about the world, but from safety, inside their towers... they aren't part of it.