Juan Fernandez told other made guys in Sicily that both he and Raynald Desjardins were formally made by Rizzuto. In Fernandez' case, he claimed that that gave him added recognition and entitled other Sicilian Mafiosi to do business with him, which they did. They voiced surprise and then went on to deal with the guy until he was killed. And he wasn't killed for that claim either, he was killed for that claim, while feigning loyalty to Rizzuto but also dealing with his enemies and avoiding him when called upon.