I have to comment on this thread. I am doing a research paper (and maybe it will be submitted to IRB so that I can conduct it). The OP topic is already biased so an objective research cannot be done. But I'll play along because this is fun! To examine this issue we already have to agree on what it means to be evil. Can you measure evil and examine other factors that coincide with evil (like making a mistake or turning a blind eye). On the flip side, a good researcher would research what it means to be good and provide contrary literature in the report.
Once "evil" is defined and you have to find a way to obtain a sample of data of "evil" things that chantry has done. Now when doing this research, are we looking at qualitative stories or are we measure hard data through quantitative means? or both? If it's qualitative, through interviews we will still have to measure the worth of each descriptive word a person is telling. For example the use of "violence" could be worth 5 points and the use of "ignoring" would be 1 point and how do you measure stories when the witness says something positive? does that negate the evilness of the chantry? An easier more digestible approach would be to do a quantitative study by sending out surveys to all people who believe in the maker. After making an unbiased test of the quality assurance that the Chantry provides, you could give out the questionnaire to taverns, home to home, chantries, military barracks, etc. Perhaps a sample of 1000 people across all demographics. Each questioned would be measured and would provide an outcome of how "evil" the chantry is. The more diverse you sample pop is, the more valid your test would be. Also if you are not including opposite questions of how helpful the chantry is to the questions of how harmful the chantry is, your test will be less valid.
Now what if your outcome turns out that the chantry is mostly good? how does your thesis look if you state measuring how evil it is? already you debunked your theory through testing. Or perhaps, everyone secretly hates the chantry and they are evil. How do you explain how everyone still cow-tails to their doctrine still. Also perhaps your study is doomed if your pop "drank" the kool aid and is brainwashed so it doesn't matter what they think anyways! So in the end, you still get conjecture and you are still left believing what you want to believe.
as for my own belief on this. I see the Chantry as better than my religion growing up at least towards magic use (probably more accepting of other demos as well allowing women to fight). I think my religion would burn magic users at the stake (and probably have).