many particular afterlives to suit the preferences and merits of souls only makes sense among the (fully, if this qualifier need be said because as far as know there is no partial liberation) liberated if you 1. are not a universalist, believing in eternal lesser states according to some merit 2. believe "individual" atman are essentially different from one another, carrying this difference even when theyve realized themselves or 3. believe that God is unfair (as this book states earlier, these outcomes are not considered equal, all are free of suffering but not all are equally blissful)
why not just kaishmir shaivi mode and say "all merge wholly into brahman in the end"?? it resolves so many problems!