I can't believe I of all people am lecturing someone on WH40k lore. The emperor personally created the Order of the Hammer (Ordo Malleus) according to the lore. You're just flat wrong
I would not call Malcador's bunch the Inquisition anymore that I would call the Monitor a Dreadnought.
Emps asked for an Internal Affairs department, not witch hunters.
Though I guess that if you want to consider them as equal to the Inquisition you would be right.
there was more than enough time between the Treaty with the Admech and the heresy to set good foundations for a civil service. Functional institutions don't do 10,000 years of decay. Even dysfunctional ones usually don't. You get a few generations of decay at most and then a reform or restructuring of some sort because Humans are social, tool-using animals, and social tools to fix other social tools have been in our toolset for millennia. If the Administratum has persisted in decay and disfunction for 10,000 years, it's because the emperor blunted or removed the social tools in the name of discouraging rebellion. Which is self defeating because the rebellions are super common anyway - largely because what passes for governance and administration is dysfunctional, and people without the need
Well, leaving aside that no, actually enacting change in such a machine us basically impossible unless you have the support of almost everyone (just look at Rowboat's problems doing that in canon), this is a false premise.
Falling systems don't necessarily reform, sometimes they simply get worse and worse until they crash. We have seen it happen to almost every human nation in history, with inner rot weakening them until an external force simply pushes them over the edge into oblivion. This is also literally what's happening to the IoM, if they don't do anything rather quickly they'll join the Roman empire (both), the Aztecs, the Macedonians and the Quing, etc rather soon.
like, this a a self-perpetuating failure state. It's not inevitable, it's the emperor being so bad at sociology and Civics that he created a society so self-defeating that hasn't fixed itself after several millennia. Most third world dictatorships are less fucked than this
Said like a true ivory tower intellectual.
Try to live in one of those shitholes for a few decades and tell me how they are "fixing" themselves.
The emperor did not fundamentally set up any of his institutions with self correction mechanisms - except maybe the inquisition, and their self correction mechanism is literal internal warfare. Probably because, as I noted before, Big E cannot into leadership and governance above the very personalized "strongman" level. He's the only one allowed to restructure things because he doesn't trust puny mortals to get it right. To be fair, they won't get it right, because humans are fallible - but they can make incremental improvements and genuine reforms. But he set the System up to take that away from them, and they have suffered for millennia as a result
When taking into account the plan was to abdicate (at least in fact if not in name) and let the "puny mortals" do whatever the fuck they wanted (which was btw also one of the points of contention with the Primarchs), this is outright false.
Family- based governance is an old classic, but it's old because of how limited it is. It's the resort of societies with low trust and a weak social toolset, relying on explicit familial ties where more developed societies have implicit social contracts and institutional avenues
Lol, this is literally how we still rule ourselves. Politician families and rich people pass the power amongst themselves like we do collectable cards. My town's gotten the same mayor for the last 20(?) Years or so and before that it was his dad, hundreds of other places are the same. And third isn't even a third world shithole kind of thing, many "really democratic" countries are the same.
20 leader-hero sons is the act of someone who can barely govern at the level of a crusader kings game, and who cannot into political theory at the nationalist or post-nationalist level of complexity. It's a mindset stuck in the pre-modern mold
They were weapons,
disposable weapons. They were a blunt object that would be used to beat all the enemies into submission and then discarded (either by retiring or
retiring them). They were never meant to rule and it's made clear in all forms of canon.
EDIT: Mind you, that doesn't mean I think the IoM, as it is, is necessary. Just that you don't need to stand on a false premise to accuse it of being bad and/or of there being better alternatives.