I’m a Christian who is already convinced of the science and is trying to make sense of this part of the Bible, but I may be having more trouble because of having been an atheist not that long ago, combined with still being in a very YEC environment. That all messes with me.
I tend to not play the providence card unless there is a real biblical reason to do so. As a homeschooler, I’ve seen history curricula that say God used Columbus to discover America. I avoid that kind of thing like the plague. I do believe God works in the world, and I have strong suspicions of providential things happening in my life, particularly in bringing me back from atheism, but I can’t say with absolute certainty that God did such and such in those instances, and when I look at the GAE and the Flood, I have a hard time accepting that God providentially kept AE descendants from leaving the region until after the flood and then providentially spread AE all over the earth afterward, when I don’t see any biblical clues that that’s the case. It’s not like in Esther, where while God is never mentioned, it is clear that He has His hand involved throughout the story.
I guess it starts to sound more like the YEC hyperevolution after the ark. Could God have done it that way? I suppose so, but is there any biblical reason to believe He did? Not really.