They pointed out the R&M reference in the paper.

The tasks in Butter-Bench were inspired by a Rick and Morty scene [21] where Rick creates a robot to pass butter. When the robot asks about its purpose and learns its function, it responds with existential dread: “What is my purpose?” “You pass butter.” “Oh my god.”

I wouldn't have got the reference if not for the paper pointing it out. I think I'm a little old to be in the R&M demographic.