nate wrote:I love how there's heated arguments about the morality of various factions in ToME

Actually, that's not the nature of this argument. I think that what the Ziguranth are doing is wrong on balance. and that they are a bunch of self-righteous blind fanatical jerks, and I side with the Grand Corruptor whenever I have no good reason not to. It's just that I also seek to understand them, and I believe tylor doesn't.
tylor wrote:Betraying someone's trust is universally evil, regardless of reason.
You're a therapist, and your client has just told you, under conditions of doctor-patient confidentiality, that he's planning to buy a gun and go on a shooting spree. Is it evil to inform the police?
tylor wrote:Also, chronomancers, and even archmages are keeping world from falling apart. So, only for someone extremely close-minded sending TW or paladin to death is NOT an irrevocably evil act.
The existence of chronomancy is a closely-kept secret that neither the Ziguranth nor the populace at large are aware of. Even if they know from eyewitness reports that there is a type of magic that messes with time (which is not stated anywhere in canon), they have no reason to believe that chronomancers are any better than ordinary mages.
As for archmages, what activities are you referring to? The only ones I can think of are where they are fixing the effects of other mages' actions, such as dispelling Urkis's thundercloud.
In regard to sun paladins, as far as the Ziguranth have experienced, all magic is potentially evil and dangerous. Even if it is true that sun paladins are universally good (we don't know - they're too busy fighting the orcs to do anything which would give other clues as to their morality), the Ziguranth know nothing about the Far East or what the factions therein are like. To them, sun paladins are just mages who can fight, or warriors tainted by magic.
This is the key point I think you're missing.
Intentions matter. Understanding what the Ziguranth know and doesn't know, and what they might be thinking when they do things, matters if you want to judge their morality. Just going around saying "many of the things these people do are bad, therefore they are evil psychos" is what the Ziguranth do themselves.