There are many lenses one can see Exodus through. -- I'm not sure that the mass killing of the Egyptians or the removing of the existing populations of Canaan (a process continuing to this day) completely shutters the story Gorski is choosing to highlight:
The Exodus story has six acts: first, a life of slavery and oppression, then the revolt against tyranny, then the difficult flight through the howling wilderness, then the infighting and misbehavior amid the stresses of that ordeal, then the handing down of a new covenant, a new law, and then finally the arrival into a new promised land and the project of building a new Jerusalem.
The difficulty and challenge is looking through both lenses at the same time, hoping that we are moving towards a story that can have liberation without genocide. Given the history of humans so far, it's a hard story to write.