“To outsiders this tendency feels like a rejection of fundamental ideals in the Gemara such as Lo BaShomayim Hi, or that Nevua has ended, etc. For everyone else, unless you are a Navi you need to explain yourself, make your case no matter how great a Tzadik or Talmud Chocham you are”
I don’t get what a Rebbe has to do with lo bashomayim as he is a physical person. For the record there is a sicha addressing the point you bring about nevuah, although the place isn’t here to address it as this thread is already too flying.