Once again, you have failed to answer why the Rebbe would need to answer how it’s okay to ask a Rebbe for brachos (and no, he wasn’t merely explaining the reason it works).
You also again fail to explain how Hashem being revealed through a tzaddik (all the sources which you brought say nothing more) is “atzmus umehus araingshtelt in a guf” which connotes much more.
Also, we are no longer in the Rebbe’s generation. Chabad’s failure to choose a new leader is just that – a failure – and doesn’t force the Ribon Shel Olam to keep the Rebbe alive (and again, the fact that there are sources to refer to a tzaddik who was niftar as alive in some sense does not begin to explain the way you treat the Rebbe.