Earnest, I can't begin to argue with you on the details of the subject. I haven't read the book you mention. I notice though that you say that Lawson Younger is an authority on the Aramaeans. I wonder why you particularly mention him on this matter when there are scholars who have more specialisation in the study of very early Canaanite civilization and the traces of Canaanite belief in biblical texts.
I saw that Lawson Younger for example has edited a book called Ugarit at Seventy Five and while specialists in this area such as Mark Smith discuss Uragitic texts and links to the bible head on and make a case consistent with Finklestein's OP, Younger's chapter in this book is called The Late Bronze Age / Iron Age Transition and the Origins of the Arameans. This suggests to me that he is not a specialist in this area. I am sure he is a smart guy but scholars tend to have very narrow and deep niches.
I would rather read a scholar who specialises in the niche at hand and is widely regarded as the goto person on a subject than someone who is more tangentially linked to it.
I openly admit that I cannot understand a lot of the detail of the scholarly argumentation. Much of it is above my head. These people have made it their life's work to look into it and they are very smart. But there is always a range of opinion in every area of study - people making cases using different lenses and they often disagree. There tends to be an overall consensus where scholars understanding centres, and then there are also people who hold minority theories out of line with the consensus. When I have no expertise in the field, I think it is safer - I feel I will be closer to the truth of a matter, if I go by the understanding of the people that most know what they are talking about - the majority consensus view - and read books by the scholars who are most respected in their niche.
You say
The view that the God of the Hebrews, of Abraham, Isaac and Jacob, is related to the Canaanite god Elsimply because he is referred to as el or elohim is not accepted by all scholars. El is both a name and a description, but the Hebrew scriptures make clear that the name of the God (elohim) of the Hebrews is Jehovah.
I'm sure you are right that not all scholars accept this. But it is the consensus view by the people who have made it their most particular area of study and I'd rather go with that.