Since we've been talking about satire being dead a bunch. Author does a really great history of Warhammer 40k, and also goes over why Neo-Nazi's keep showing up at 40k events despite Games Workshop saying "it's satire bro".
I used to listen to a lot of TotalBiscuit (I know) and always felt massively uncomfortable whenever he'd start talking about 40k stuff. He'd go from this nerd games critic to gleefully saying "exterminate the xeno for the emperor" and it never felt humorous, it felt like a weird power fantasy he was indulging in. I guess that's how a lot of nerds end up viewing the Space Marines.
Personally I was always more into the Necrons. They're robots but also skeletons, so it's like the best parts of the two coolest things.
I used to play Tau, back when they were the actual FALC faction before they got retconned into the worst "Chyna Bad Xinjiang Uyghur Genocide TIANANMEN SQUARE" parody imaginable.
Necrons chopping up their gods and making WMDs was incredibly based.