Everyone agrees that Conversion according to Halacha is real and true. I don't know where he gets off writing otherwise. He is a propagandist provoking against Chabad and Orthodox Jews. In fact, it is written in Chassidic books that it is in the merit of a European Ger that the entire nature of our relationship with God was changed for the better. Knopf is a kook. He practices intellectual dishonesty.
from the article: 'Jews by Choice' are members of the tribe too