Consider that, in relational QM, physical systems only have well-defined properties in relation to one another, not as universal or absolute properties. This is similar to the way that simultaneity becomes relative to an inertial frame in special relativity. You can only answer a question about another physical system by interacting with it, and this interaction then "synchronizes" you in such a way that you now have certain properties in relation to one another, but not necessarily in relation to some other system. When we picture the world as being in singular objective state (with no indexicals), we are picturing it wrong. There is no single objective state. The way the world exists is through its relations, and an indexical such as "me" is an abstraction of such a set of relations.