Chabadshlucha –
“it’s the Rebbe because he is the most recent Nossi Hador”
How do you know that of all of the tzaddikim alive today, that all are unqualified to be Nossi Hador? Did you review and rate all of the tzaddikim as unqualified?
“And why not the Chazon Ish? Because he didn’t take personal responsibility for every Jew, just got his chareidi community.”
Was the Rebbe the leader for Reform Jews, intermarried Jews and Jews converted to Christianity, and their Nossi Hador as well? Did the Reform Jews and Jewish converts to Christianity accept the Rebbe as such? If not, how can you claim that the Rebbe was the leader for all Jews?