The Marshall Project likewise described ‘neighborhoods’ with upbeat names like ‘Yellow Frog’ and ‘Red Parrot,’ framing them as euphemisms meant to soften the reality of confinement.​

So it is entirely possible that ‘Blue Butterfly’ is simply an old label, now being reinterpreted in the most ominous way imaginable. It is also possible that a named area is being used for a specific operational purpose that has not been explained publicly, and that is exactly why vague terminology makes people nervous.

Until there is on-the-record confirmation of what these online claims describe, the only honest position is to keep asking for verifiable facts while refusing to treat a viral phrase as proof.