I think it's naive to believe the Kyrians don't have pretty significant problems that Blizzard may or may not be blind to. I say "may not" because a big part of the zone's conflict leads to things like the Forsworn completely independent of the Jailer's involvement.
Saying it's "the most evil" compared to an eternity of rotating tortures to keep misery fresh with no escape whatsoever is a pretty ridiculous take.