Ugh, this Rovellian nonsense. RQM is almost as bad as superdeterminism.
RQM cannot be correct because the superpositional state of quantum systems is an observable fact that has real-world testable and tested consequences. Simple as that.
RQM is not saying much. And what it is mostly saying is covered by already-existing QM theories. And as to the rest, what it’s claiming is purely wrong. To put it bluntly and to reiterate the above, RQM is either obvious or wrong. The parts that are obvious already exist elsewhere. And that parts that are wrong are all Rovelli’s.
It’s a theory that has no purpose and is directly contradicted by the way the universe actually works.