@Red225
1. A Judge Dredd scenario doesn't work here, his world was closer to a giant dystopian post-modern slum than the bright, colorful, open, generally prosperous city this story portrays. Not to mention Dredd was a one man army going into hell-holes, while this story is closer to groups of thugs pretending to carry out lawful duties.
2. Unless I recall incorrectly, Underworld was more about humans seeking the secrets of immortality and/or the powers of the vampires and such. While studying bodies can lead to new understandings in our own bodies, it almost never does anything for actual tech (e.g. computers/cellphones/etc).
3. Yes, the villains did say this was a ploy to pacify the public, but even then, this is so close to a public witch burning that to even suggest it has relation to law and order, or even a courtroom is a joke. Even in our own world we have legal action that happens to appease the public, but that still has to follow all the proper procedures and processes, otherwise all reasonable faith in the outcome is lost.
4. It's entirely possible there is a dictator here, but given the fact that there are multiple competing "Knight organizations", whatever leader there is would also have to be completely incompetent. The city seems to be managed more by multiple separate competing militia groups than any sort of organized law and order. If this city can afford to have fracture defense groups, then there is no way the threat to their survival from the monsters can be very high, since the one constant about humanity in every story under the sun is that a powerful outside threat always unifies us against them.
So while yes, as you pointed out there are certainly scenario's where there can be a gap between the social and technological status of a people group, none of the known or reasonable scenario's seem to apply to this stories world setting. That's my complaint, while the real world has random incomprehensible events sometimes, generally speaking, fiction has to make sense at some level or the reader loses faith in the author to tell a coherent tale.