The arizal famously writes that it’s *mamash mamash” but how is that understood? My rebbeim told me that it’s referring to godliness, that just as a flame is not diminished, decreased or divided by igniting something else, Hashem kavayachol made a tiny fire of godliness called a neshoma.
I cant say I have a mekor for this; these ideas are heavily dependent on having a rebbe and a mesorah.
The fact that chabad and others might use kabalah to go off the derech was predicted by the Gaon and the tzlach as one of their criticisms of chassidus. However, the chofetz chaim famously said that the Gaon’s opposition would, in his time, only be to chabad and (some say) breslov. All other chassidishe groups have become more down to earth.