They don't. I'm not really sure where you get that idea from.
I read the original in Hebrew routinely and I don't get that sense at all that they conflict.
I mean just look at Exodus 6:3, were God explicitly says that he has more than one name.
There's not a lot of independent records from back then, so archeologists try to create stories from whatever they have, starting from the assumption that the religious text is wrong, and then creating a narrative from there.
If you don't use "religious text inaccurate" as your initial assumption then there's basically no evidence for this theory.
It doesn't help that they conflate Canaanites and Israelites so what one does is attributed to the other. However if you assume the Bible is correct and they are different people, with the Israelites railing against the practices of the Canaanites then the entire pantheism argument evaporates.
Is your name Doctor, Father, General, Mr., George, or Maursault?
People can have more than one title which is used as a name. It's the same with God, the different names denote different aspects.
I don't know if Christianity does this, but Judaism associates each name with a different attribute. For example: mercy, justice, creation, compassion, etc.
By knowing which name is used, i.e. which attribute is being expressed, you gain a whole new insight when reading the stories on what's going on.
It's a real shame that most English translations do not preserve this information.