Warhammer 40k fluff thread VI: They see me Ward'en, they haten

[Trixie]

The screwing of the defenders of Armageddon was done by the Adeptus Terra, not the Grey Knights.
Similarly, early accounts of mindwiping and murdering due to deamonic interaction are perpetrated by others - never the GKs themselves.

My impression was, it was only done by others because it was considered too wasteful to have GK sit around and lost time purging anyone, since they're urgently needed in two dozen places at once, hence, both then and now others do it instead?

But there's no guarantee the galaxy you're looking at will have compatible life, or any life at all.

Sure. But, my impression of the above post was that genestealers were supposed to be randomly thrown into extragalactic space with a hope oh hitting a galaxy at all, not looking for a specific places in these galaxies...

Which, once you realize that that extragalactic space is so large and empty a big galaxy compared to it is smaller than planet compared to galaxy, makes little sense.