Arso:
“That is weird! Is that the same as Trump lehavdil considering himself President? You don’t become something because you decide to be that thing. Unless, of course, you are extremely woke.”
Look, for the definition of Nassi- see the post Menachem posted earlier- which came from The Rebbe.
As Mimale Makom of The Frierdiker Rebbe, the Rebbe filled his role in this regard as well. Or you can say he never saw himself as his own Rebbe- it seems whatever directives he gave and brochos etc etc were all told to him by The Frierdiker Rebbe, whether by the Ohel or elsewhere- that’s also true. In any case that’s what I meant.
As far as there being only one- dunno- it is true that Tanya says Roshei Bnei Yisrael shebidoram in the plural. So it would make sense that Moshe could also be in the plural. I’m not sure if Nassi hador means there’s only one the same way Moshe could be plural as well. I don’t really care either.