All Antoine will inherit is a time share in the apartment his stepfather is currently paying for. There's no relation between SJ and Antoine, remember? And even though SJ pretends everybody at her shittoo is part of one big happy family (when it suits her, like using them to film their pathetic empty lives to make money with), when it comes to inheritance, only the real deal will matter. Nephews and nieces, if she hasn't produced a kid of her own by then. That's why Marie's decision to participate in the vlogs and put the spotlight on her son is so pitifully desperate. And it's really not fair to the kid.