And Facebook Brasil just claims is another company. But the counter court order that removed the block the other times was filled by Facebook Brasil.
So Facebook Brasil + Whatsapp are obviously on an arrogant position with very unprofessional response to the court orders. If a proper brazilian lawyer was hired to properly react to the court orders I doubt that any of the 3 blocks would ever have happened, moreso because they have strong technical and ethical reasons on their side. At a minimum there would be a long judicial dispute. Even the judge that overruled the other block stated that Whatsapp didn't act the proper way while dealing with the previous court order.
WhatsApp might have the HN crowd sympathy on this, but they brought these issues to themselves by being unprofessional on their response to brazilian justice.