"No rights for x until full and equal rights for y" is a bad principle. - The project of securing full and equal rights for particular groups is never complete. So it would be a mistake to wait for full and equal rights for group x before extending any rights at all to group y. This is true for groups within our own species, as well as for humans and other animals. In the future, it may be true for biological and digital minds. - This project is also not zero sum. There are many opportunities to pursue co-beneficial solutions, and extending welfare or rights to nonhumans can often improve outcomes for humans. In this context, for example, a thoughtful approach to AI welfare or rights could enhance safety and alignment by supporting human-AI cooperation.
Until every human has full, equal rights, no one should even dare to speak about "AI rights."