They are fully incorporated in the society of the Church who, possessing the Spirit of Christ accept her entire system and all the means of salvation given to her, and are united with her as part of her visible bodily structure and through her with Christ, who rules her through the Supreme Pontiff and the bishops. The bonds which bind men to the Church in a visible way are profession of faith, the sacraments, and ecclesiastical government and communion.
Again, no direct error, but error by implication. And again, only the "Feeneyites" would have any problem with even the "implied error". There's the implication that people can be
PARTIALLY incorporated in the Church and "bound to the Church" in a non-invisible way. But, again, it doesn't actually SAY that directly.
Non-Feeneyite Traditional Catholics agree with the implied corollary.
Most Traditional Catholics think that those who are not visibly within the Catholic Church can be saved, i.e. that those who live out their lives as Protestants, Jєωs, Muslims can be saved due to some subjective longing to do the will of God. This echoes the "teaching" of
Suprema Haec (which LG will directly quote later on).
So if these people can be saved, then, as a consequence of EENS, they must be somehow WITHIN the Church. But they are not "fully incorporated in the society of the Church" and are not "bound in a visible way" to the Church. This teaching, implied here by LG, is actually believed by the vast majority of Traditional Catholics. In fact, most Traditional Catholics would have to applaud LG for this defense of the faith against the "Feeneyite heresy".