@DaasYochid,
“No, I’m not accusing you of believing that Moshe Rabbeinu or the Rebbe are Hashem, ch”v. But can’t you see how use of such terminology (which seems much too common) can (and has) lead to belief in shituf?”
Which is why it’s important to learn Chassidus. I think you’d be hard pressed to find a Lubavitcher who has heard these concepts, but doesn’t know the background to them in Chassidus. Yes, there are fresh baalei Tshuva who do and say silly things, but that’s not limited to this field.
I myself, learned these ideas in Chassidus about Bittul, way before I learned this sicha.