On any of the versions of egalitarianism presented above, the individuals among whom value should be equalised are all those whose lives can go well or badly. They include all sentient beings. Since most nonhuman animals are sentient, our concern about inequality among individuals should be extended to them as well. To exclude some sentient beings from the scope of equality on the grounds of species membership (simply because they are not human) would be unjustified – an instance of speciesist discrimination. Therefore, any sound version of egalitarianism must reject speciesism.
Logically, if chimps were smarter than us, we should let them kill us. According to the egalitarian’s version of sentient value. The death warrant of egalitarian philosophy was written the moment we discovered DNA. Here is a thing which varies between all sentient organic beings, and yes, we can measure it.
I think they intend to use the term anthropocentric, but it’s a good read if you’re into that sort of thing.
n.b. Being the smartest person in any given room isn’t usually a problem until the reverse never occurs.