R. Elijah Benamozegh was a 19th century rabbi and kabbalist, who wrote many works of biblical commentary and Jewish responsa, but is chiefly known in the non-Jewish world for his book on religious universalism, Israel and Humanity.
Israel and Humanity is quite singular in that it shows an orthodox rabbi incorporating non-Jewish religious sources (esp. Christian verses) in order to advocate his vision for a Noahide world coexisting with a Jewish one. In 2005, R. Adin Steinsaltz wrote an essay, "Peace without Conciliation," that quoted R. Benamozegh (on Benamozegh's assertion that "Christianity is but a distorted Kabbalah") to support his own view of correcting gentile nations and live according to Noahide laws.
Nevertheless, I have heard, but cannot source, that most rabbis disapprove of R. Benamozegh's theology. Can someone help me out here? I don't know another religious Jewish person here in Israel who has even heard of him, and the English translation of Israel and Humanity is from a Catholic Publisher (Paulist Press).
So, what rabbinic literature has been written about R. Benamozegh's Noahide works, from his lifetime to today? Is he accepted and learned in orthodox institutions (and why not)? Is it appropriate to study his works generally, and his Noahide theology specifically?