Well that's good. I might pick up Medusan Wings when I finish the other book I'm reading. So who wrote the codex?
Nobody knows, since the backlash against writers like Matt Ward, they stopped giving out the names of those who worked on them.
On the flip side of this whole debacle the Iron Hands got some sweet wargear to go with their excellent chapter tactics. That's something you can be happy about (don't repress it, you'll spawn more daemons).
Ah yes, the infamous Chapter Master Smashfucker. EDIT: Wow, they math-hammered him against the Primarchs. He wins against all primarchs in the long-term, kills Corvus in a standard game length and can even hold his ground against the Emperor with maxed stats. Only thing that can kill him is the Emperor with a D-strength weapon.
I know 1d4chan is big on their CM SF and the Gorgon's Chain, but I think the rest of the wargear is pretty cool. Betrayer'S Bane, an unlimited use combi melta? Iron Stome to boost your vehicle repairs? Even the Axe of Medusa is pretty cool. There's more to the supplement than that "one" item (which I admit is a pretty cool piece of wargear)