if God says don't do X, and later traditions build elaborate systems around doing X, that's a problem regardless of who points it out.
The Torah is clear:
Don't consult mediums (Leviticus 19:31)
Don't practice sorcery or witchcraft (Deuteronomy 18:10-12)
Don't seek the dead (Deuteronomy 18:11)
Saul dies partly for consulting the witch of Endor (1 Chronicles 10:13)
Then Kabbalah shows up and builds entire cosmologies around:
Demonic forces (qlippot , shedim )
Angelic/demonic invocation (practical Kabbalah, practical being the operative word)
Soul-travel and reincarnation (gilgul )
Brother I can't change your heart you might in fact be an agent of Satan in the flesh what can I do?
But tell you Christ is the way and the light.