There's a dude with a whip in the picture, so it seems like the artist believes it was slave labor

His weight adds a lot to it I’m sure, but his general lack of grace or coordination is generally what makes it funny to people imo. Like it’s a hilariously bad impression of a lightsaber battle, so bad that I think most people assumed it was staged/self-aware. I think it could be a 60 year old woman or an 8 year old kid, it’d still be funny.