I decided to post a comment on the page, but just in case I get censored, I'll repost it here verbatim.
The Warhammer 40,000 universe is supposed to portray a cruel and malevolent setting utterly devoid of any humanity or kindness, as summarized in the phrase "grimdark," which is commonly used to describe the setting. It seems to me, that in a universe composed entirely of immoral villains, hell bent on exterminating literally everything they cannot enslave or exploit, expecting the characters to suddenly stop wearing fur out of moral considerations in entirely missing the point.
Scratch that. I didn't realize there were other comments until after I posted. It seems that at least 50 other people made the same point that I did