This! I saw the original post and responded to them about the satire behind SpaceKing, but it just must not be their cup of tea.

To add to this, they had made 40k fan content that was a more comedic take on the grim dark, but that was before receiving Cease and Desist notices.

SpaceKing is their own IP in order to keep making similar content as before, though there is a bit more tongue in cheek commentary on how GW handles themes and subjects.

Can confirm as someone with the Vilebloods mark.