I dont think this cousin realizes that he has no obligation to obey. Especially since his parents approve of the circumstances. In fact, I dont think any of them realize that fact.
It's amazing how, his legal parents and thus guardians saying they're leaving their child in this persons care means nothing to the rest of the family? @HOOfan_1 Also yeah, that fact that no one has heard or at least acted before a year passed has no rights to talk about being left with strangers.