At a minimum he doesn't seems to be worse than the other counts - no talk about missing persons or the like. The local watch seems rather open minded judging from their handling of complete paranoid (basically, saying 'do like he wants unless it gets nasty' if you talk to them about it).
And he hasn't what seems a room set appart to torture and execute unwelcome minorities like the countess of Leyawin. Which would make him actually nicer than some of his homologues despite being a vampire.
His name is Janus, implying he's two-faced, possibly a jingoist-in-the-rough. I could go either way with this guy, certainly not very developed, but more approachable than the others.
Getting away from him, the Alessian Doctrines impacted http://www.imperial-library.info/dfbooks/b025_legalbasic.shtml throughout their old holds. The doctrines held all men are guilty (inherent?) until proven innocent. I'd be inclined to read this as grounds for common, albeit paranoid, belief the "other" is guilty of an evil, so long as they are unable to logicaly, out maneuver the plaintiff.
Beside that mess, there are universal truths. They're just obfuscated by mortal dementia. Which is to say, memory of these truths has waned like the moons over the millenia, until creation stories are all we remember.