Genesis 1-11 is global, I misspoke earlier when I said only 1-10. It only narrows down in view when we get to Abraham. Up until that point it's establishing how the world came about to get to Abraham.
Sure, it's about Israel, but it's not written in a vacuum. There are other tribes, etc. Israel interacts with throughout the historical account of Israel. It's only about Israel as it pertains to God building up a people to bring about the Messiah through them. This much is said in Genesis 3:15, which is considered the proto-Gospel.
I believe I've stated my position on secular interpretations of data which leads them to deep time dates. They come at them with already ingrained assumptions of ancient age of reality and that assumptions blinds them from any faulty interpretations of the data they might have. Case and point, Egypt, we already know the Egyptian dynasties just like some in the Mesopotamian Dynasties had inaccurate date tracking, yet people love to use Egyptian timelines to challenge Biblical timelines. Even Egyptologists admit Egyptian timelines are flaky, yet they still hold to the consensus of deep age in the Egyptian calendar when I've seen Biblical scholars easily fit the Egyptian Dynasties in a Biblical calendar if you don't assume all of this stuff happened over thousands of thousands of years.
Another example. I was listening to
Nathaniel T. Jeanson talk about
his new research into genetics which
he is doing to trace, as best we can, lineages back to Noah, Shem, Ham, and Japheth. In his lecture on Egyptian genetic origins traced throughout history from the genetic tracing he and his team have done, he explained that East Africans tell a story how they came from West Africa over a handful of centuries. Conventional consensus in scientific thought regarding deep age dismissed this as pure myth, but his findings showed that if you don't assume deep time, the genetic history proves them right showing that a predominant lineage of South-Central Africans come from one genetic male and traveled across the region in a handful of centuries rather than millions and millions of years.