User blog comment:Supahbadmarine/Canon Policy Discussion 2:Empire and Xenos/@comment-1620907-20131111095835/@comment-4851119-20131112171129

I have to agree with Ork that if they survived the War in Heaven ALONE that seems to be an OP level of toughness, never mind that if they survive

-the Enslaver period;

-all those warpstorms and such shit in the Age of Strife;

-the Imperium's xenocidal policies in the Great Crusade;

-AND avoided becoming collateral damage in the Horus Heresy

If they survive everything listed then that's just overdoing it.

I do feel that races who were driven to extinction or near-extinction in the WiH are okay, but no real survivors.