When I read this for the first time, I actually went in cold (I was unaware of the background of the "homecoming"). Read the walk in the desert bit, thought it was harsh, but I could see where He was coming from.
For the retaking of Israel/Judia however, I was genuinely surprised that it was a brutal and bloodthursty conquest, where basically everyone was eliminated. As mentioned previously, war was not fun back then. This however was brutal in that it was absolute, and shocking for me in that it was God sanctioned.
I still remember reading it and wondering, who are these people? We know very little about them, other than they were eliminated to make way for God's children. I can read a lot on Sumeria, Assyria, and even the African nations who were effectively enslaved by the Egyptians, but nothing on these people.
They have no voice, and have no story, only because they were living in the wrong spot as far as I could see.
I assume this did happen, as I believe the Exodus did historically happen. As such, I take these events as historic and therefore literal. This is why it does disturbs me, just like any other forced relocation or eradication (i.e. Rwanda, Balkans, Armenia).