The last Lubavitcher Rebbe points out that there were generally two opinions regarding the Moreh Nvuchim:
- Some said that it wasn't written by the Rambam, others said that even if it was written by the Rambam, it was written for the "Perplexed", and anyone who is not perplexed could live his life without learning it.
- One must say that this sefer was written for everyone, because to say that it was written only for "sick" people, and any healthy person who would read it would get sick, seems unreasonable. Moreover, the Rambam specifically says in the beginning of the Sefer that it was written for his best student.
Moreover, much of Chabad Chassidus is based on Moreh Nvuchim, and many times the Lubavitcher Rebbes would bring sources of the Moreh Nvuchim in the Zohar and Midrashim.
It is possible that the general attitude to Moreh Nvuchim changed as a result of the revelation (by the Previous Lubavitcher Rebbe who had a tradition from the Baal Shem Tov) that the Rambam was a great Mkubal