His theology seems to depend on many things that require stretches in translations that deviate from the oldest understandings.
For Example,
Deuteronomy 32:8
When the Most High gave the nations their inheritance, when He divided the sons of man, He set the boundaries of the peoples according to the number of the sons of (Israel).
Hebrew texts clearly state Israel, he is having to pull from the LXX and non Jewish texts to build his theology. We know that Israel means struggles with God, so if we see words from other cultures that refer to a stubborn animal, it could simply be referring to Jacob or Israel. For example, Canaanite Bull El need not be referring to a god but simply a man that struggled with God. God clearly allows El to be added to the names of mortal men. Thus the references could be contrasting those men who were confused as gods with the One True and Only God, because regardless of what is said pertaining to them, they will die mortal men.
Now none of this appeals to me spiritually except invoking Jesus's warnings about the deep things of Satan. Heiser has left the book(Bible) that declares itself to be fully adequate for Canaanite texts.