Sure, but dehumanization is explicitly used to other specific out-groups of humans. Extending our understanding of sapience to other animals than humans would d

Sure, but dehumanization is explicitly used to other specific out-groups of humans. Extending our understanding of sapience to other animals than humans would do the opposite of dehumanization. I don't think we'll see a future pan-sapientist Zimbabwe invade Botswana to liberate their zebras or anything like that. Empathy is generally easier as a tool for peace than war.