^true but that doesnt change the fact that willingly doing all that makes them seriously messed up. being a part of daily life does not make it acceptable.

I don't like using ignorance as an excuse for being shitty people, it's the people of Tevinter that allowed such moral degradation of society, that in itself is bad enough

No, you are not, I'm sorry if it seemed like I was accusing you of that rather I was giving my reasoning for labeling them messed up. To me, ignorance of common decency doesn't make one less of a shitty person when they do shitty things.

'Common decency' can also be a matter of cultural perspective. That is not meant to sound like a mitigating excuse, but an attempt at a clarifying explanation. Leliana was born in Ferelden but grew up in Orlais. She had no idea (in DAO) that her initial perspective of elves was racist until the Elven Warden points out her views of them as 'different' was 'not cruel' but still ignorant. She admits her thoughts were very casual and 'just seemed natural and right', but she agrees she was wrong and adapts. Corypheus would have grown up in a society where it was common to use blood magic, to sacrifice 'lesser' lives for experimental purposes, and generally behave in an way that other societies found abhorrent and clearly condemn. As far as everybody else is concerned (including most players), Tevinter was only ever a paragon of virtue in their own minds.

As for the main topic, an objective documentary exploring Tevinter of old and the events surrounding the momentous parting of the Veil by the High Priests of the Old Gods could be quite fascinating.

I don't know it sounds pretty cool. But I kinda just want the details to stay a mystery it gives these events character.

I would like to see each priest's point of view and how they saw things in the Tevinter Empire

For some reason, I imagine the Second Sin playing out a lot like The End of Evangelion or the Eclipse from Berserk. If BioWare could get a proper anime studio to make it a reality, then I'm sold.