It just means that the people who couldn’t beat the Meat Circus have taken over the conversation ages ago, and those who manned up and beat it half a dozen times have decided that it isn’t worth it to keep arguing.
And the game isn’t just the Meat Circus. There’s a reason people want Psychonauts 2. The Milkman and Goggalor are two of the finest levels ever created in a video game.
Meat Circus is just one entry in a tradition of unnecessarily hard or frustrating final levels in otherwise wonderful games (Doom 2, Half-life, Vampire: TM - Bloodlines, God of War, Bioshock, Alpha Protocol).