Well yeah, it should still be a draw if black stays passive, but if he allows white to regroup with Ke3 Bd1 Be2 and then SOMEHOW allows b4-b5, suddenly he has a lot to worry about, because N on c6 is absolutely perfect, not only closing all the files but also preventing some sort of f5 because of e5 square. If black allowed b5 suddenly the knight is quite out of place, where can you put it? d8 is just super passive, while a5 supported by b6 is again quite out of play. Still a draw most likely, but then black actually has to work for it IMO