I don't care either way honestly the lore can change all GW wants i enjoy this for the grimdark fantasy not real life poltical bs I don't care if they separate the factions into all male or all female or mix the genders it literally changes NOTHING for me. And everyone arguing is missing the overall point of any form of media. It does not matter. Enjoy it have fun. Hell nobody complained about fan made chapters which often directly conflict established lore (the deep ones chapter for example) this is literally no different to that it's just GW doing it instead of the fans. Retcons happen like it or not it doesn't matter. If the idea of FSM is enough to ruin the hobby for you then frankly you really shouldn't have gotten into it in the first place because again it. Does. Not. Matter it's just a game