Canaanite culture was dominant in the Southern Levant during the Bronze Age (3,500-1,200 B.C.E.) As Iron Age I began, the Canaanite city-states faded.

This caught my eye as possible intentional misdirection, or perhaps just indication of a prevalent lack of understanding about the region during that period. (Actually, I believe the lack of understanding was deliberately created.)

Ask yourself if this sounds like "fading":

The Late Bronze Age collapse was a time of widespread societal collapse during the 12th century BC, between c. 1200 and 1150. The collapse affected a large area of the Eastern Mediterranean (North Africa and Southeast Europe) and the Near East, in particular Egypt, eastern Libya, the Balkans, the Aegean, Anatolia, and the Caucasus. It was sudden, violent, and culturally disruptive for many Bronze Age civilizations, and it brought a sharp economic decline to regional powers, notably ushering in the Greek Dark Ages.

In short, it seems like what They are hiding is an invasion and widespread devastation all over the region. I recall hearing that something like 50 cities were stomped on so hard they were never rebuilt.

I've never sorted it all out, but the best lead on the culprits seemed to be that the Egyptians said they were attacked by the "Sea People", among whom were the "Peleset". These "Peleset" settled in the area and became what were called the "Philistines", and from which we later get the place name "Palestine".