Damoshe, this was not a chabad source, rather a hesped on the steipler from a rosh yeshiva in eretz yisroel; but it had absolutely no bearing on the conversation.
Nom, we would kill them if we had a beis din..we don’t, so we can’t. Neviim must perform a neis and make predictions. If they don’t, then they’re chayav misa.
If the rashba said he was false, what makes you think the arizal followed him? Because you found some overlap? Edited second time. Next time I can just trash the post, it’s much easier.
I still don’t know who this person was, but i think of he were a major historical figure, there’d be more talk of him and i would have heard something. Plus the neo chabads would have quoted him a lot.
It’s obvious where you get your information from; just copy and paste from the dying pseudo academic blogosphere of people who hate mesorah.