Hot take (about 30 years after release): In Warhammer 40K, the Emperor is THE existential threat to the Universe, the cause of Chaos invading reality. The Empire is absolutely evil, destroys any human hope, and blatantly uses Nazi iconography. It's a crapsack universe, but even for that, the Empire is the worst.
So it creeps me the fuck out when I see people using WH40K Marine or especially Inquisition stuff for their art, and making them "heroic". It's the same as back in the day with sandbox wargames, that one guy who always played the Nazis, and sometimes cosplayed. Sure, he had a big set of Tractics minis and was a good opponent, but mayyyyybe we shouldn't encourage him.
This reminds me of a wonderful scene in the movie North Face (Nordwand), about a German attempt to climb the Eiger back in the 1930s. The two heroes grew up climbing mountains, and were recruited to climb the Eiger. (They both die in the attempt. The young woman reporter leaves Germany before the war, never to return.) They are sitting in a pub having a beer. The mood is festive. In walks an SS officer in his big black coat. We ALL know what is about to happen having seen it in dozens of movies. Then the tension breaks. He's Hans, their old friend from back in their home town. They have a beer with him.