I name it pseudo-science because in my understanding it does not predict anything. The worlds, for example. What defines, what identifies a world? Silence. Which structures are defined in their Hilbert space? Silence. The Copenhagen interpretation has a large amount of structure, because it has a classical part, and all the structure of the classical part can be used. So we have a configuration space, momentum space, and various operators to measure them. MWI has a Hilbert space, some Hamilton operator, and a state. This is essentially nothing, no base for deriving even a single physical prediction. Something else? Silence.