To yankel berel
I’d like to add to your point about Chabad rejecting the concept of Moshiach from the dead. A Lubavicher told me that when the Tebbe died it created shock waves in CH because it meant that he coulcn’t be Moshiach. Rather rhan accept that simple truth, two camps emerged. One denied that the Rebbe actually died, the other accepted that fact but consoled themselves with the Chazal that after a Tzaddik dies he’s more alive than when he was living.