Balanced interfaces is a different subject than complementary circuit topography. There is nothing wrong with generating a balanced line output interface out of non-complementary circuitry so as to exploit the merits of that kind of interface. The suggestion that such a design is almost deceitful is absurd.
The best known example of complementary circuitry is the push-pull power amp output stage, and there is a small army of people saying that single ended is better. But that is the subject of a different thread.
The best known example of complementary circuitry is the push-pull power amp output stage, and there is a small army of people saying that single ended is better. But that is the subject of a different thread.