Throughout human history, humans have been making up shibboleths to distinguish the in group from the out group. You can use skin color, linguistic accents, favorite sports teams, religious dogma, and a million other criteria.
But why? Why even start there? If we are on the verge of true general artificial intelligence, why would you start from a presumption of prejudice, rather than judging on some set of ethical merits for personhood, such as empathy, intelligence, creativity, self awareness and so forth?
Is it that you assume there will be an “us verses them” battle, and you want the battle lines to be clearly drawn?
We seem to be quite ready for AGI as inferiors, incapable of preparing for AGIs as superiors, and unwilling to consider AGIs as equals.