Ah yes, the genetically modified, cloned, super-soldiers who all hail an iconic god-emperor, who in reality died long ago. They gleefully genocide their way through the universe in the name of this corpse that never cared about them in the first place. They all internalise insane amounts of trauma and death and claim it to be a good thing.
Definitely don't think about the parallels with current hegemonies on Earth that also cultishly worship long-dead symbols that justify suffering of the masses, depersonalisation, eugenics, and genocide.
To me, 40k's spes mariens were always a warning to society - This is the direction you're headed if you keep this shit up.