Grimdark Sworddream is an oxymoron.  The entire point of Sworddream is positivity.  The entire point of grimdark is the opposite.

SWORD DREAM - A backronym for Second Wave Of Roleplaying Design - DIY Rules Everything Around Me, SWORD DREAM, or *DREAM for short, is a term and social media hashtag for a movement of designing role-playing games (RPGs) with a focus on tolerance, accessibility, and diversity.

While there is no official standard, participants have adopted the following principles:

• Stands against hate & prejudice in all forms.
• Works to be radically inclusive.
• Encourages the use of sensible tools for communication and consent.
• Opposes harassment and strives for non-toxic discourse.
• Values creators & their work.
• Values experimentation in game design & worldbuilding.
• Isn't defined by, but is interested in: anti-canons, emergent story, generative worlds, kitbashing, non-violent play options, and more.
• There is no one *DREAM. Anyone who commits to these principles is *DREAMing .

Simply put my Sworddream was a Grimdark RPG with the crypto-fascist elements stripped and replaced with Gray Vs Grey morality.  "Grimdark Swordream" is tongue-in-cheek, and a way to discourage fascists from attempting to co-opt the game.