And to bring attention back to a fundamental flaw of Chantry teachings, here's what World of Thedas says concerning one of its core teachings:
"Magic is a corrupting influence in the world."
Now at what point did the Chantry decide that magic is always bad/evil? Let's contrast with what Andraste purportedly said about magic according to her disciples:
"Magic exists to serve man, and never to rule over him; Foul and corrupt are they; Who have taken His gift; And turned it against His children. They shall be named Maleficar, accursed ones. They shall find no rest in this world; Or beyond." -Transfigurations 1:2
Clearly, Andraste is saying that magic is a gift from the Maker and should be used for good. That using this magic for personal power or evil is a grave sin and therefore, Andraste is encouraging mages to use their magic responsibly. Never does the Bride of the Maker say that magic is evil, that was a teaching added on by the Chantry later.
And look how well that turned out.
It's plain that too many people underestimate just how much influence this one of four core beliefs in the Chantry has on the current mage-templar conflict. It's this same belief that is rooted in Circle and Templar policy and essentially dumped kerosene into a pool in the house's basement waiting for a match to light it.
Had the Chantry stuck closer to what Andraste actually said and not define magic as objectively evil when that's objectively not true, there would be less grounds for a war.
It's the equivalent to criminal labeling theory where assuming that a kid is a criminal is doomed to be a self-fulfilling prophecy as long as that prejudice sticks into place. Eventually, that bias permeates into the kid's subconscious to where he believes that criminality is his only destiny and low and behold, he becomes a gang banger.
A less biased and more objective form of thinking would make you acknowledge that the kid is at risk due to factors in his environment and background. But there's a chance for the kid not to become a criminal if he's instilled with a sense of responsibility and he is exposed him to experiences and training more likely to make him a healthy law-abiding citizen since he's made aware of the fact that becoming a criminal isn't his only path.
In that same light and with the inherent pressures that being a mage entail, how healthy is it for that mage and for society to tell him that his magic is inherently evil and therefore he's an inherent danger to everyone around him unless he can "control himself"? And if he doesn't, he'll get killed or magically lobotomized? No wonder some mages see blood magic and messing with demons as a viable solution to their problems.
Contrast with the Dalish and Alamarri. They are aware of the risks that magic can have and have their own precautions for worst case scenarios, but they don't damn their mages for it. The mages are raised to responsibly use their magic for the good of their people and respected by their people. Even in light of the 3-mage rule retcon, the Dalish approach is still better than the Chantry's. They view magic as part of the world and keepers are regarded as a window into the past, since it's believed (and later proven somewhat true) that all elves once held magic which they call a gift.
And while the Dalish continue to preserve what remains of their culture and heritage; the Chantry tore itself apart due to its own inherent core teaching which contradicts with the teaching of it's spiritual founder, Andraste. As I said in a previous post, it's obvious that the fundamental problem of the mage-templar conflict is that it's a false dichotomy that's focusing on the symptoms rather than the disease.