The funniest is them just absolutely ignoring the whole Roboute Guilliman thing where he wakes up, looks around, and is so appaled and shocked by what the empirium had become that he nearly noped the fuck out of there before getting a pep talk from his dad.

Robot Gorillaman was fine with the totalitarian autocracy and casual xeno genocide of the 30k era, but even he is aghast at the sheer pointless tyranny of the 40k Imperium. Goes to show it can always get worse in the Grimdarkness of the Grimdark Future.