Black Crusade, p24
>fearing that the power of Chaos would eventually corrupt all of humanity at some point in the future the Emperor set about creating mankind’s replacement: the Primarchs
>followers of the Emperor maintain that the Primarchs were never intended to truly replace mankind
Is this creative writing or is this written elsewhere?
I remember the argument always being about space marines being the replacement, with the answer always: No, their penises don't work, no matter how many rogue trader sources say they were sex loving bionic soldiers
But never being about the primarchs

I'd assume it's just traitor lies given this is a book about the heroes of chaos... but it doesn't lie about the Imperium in the slightest anywhere else

Though I imagine this 2011 book is a bit outdated on what's canon given their theft is now fully explained along with giving them a mummy named Erda