Unfortunately it’s the only thing that makes sense to me at this point. Clone bodies clearly aren’t working for Palps, and the only way Daisy would be a female version of him anyway is if she were a ginger.
This other reveal is also one that makes everything that happened in the prequels and originals fall under a different light, which is something you want for a grand finale - encouraging subsequent rewatches. It answers unanswered questions in the saga. Palpatine’s fingers touch everything from Anakin’s mother’s death, Padme’s death, and even his own creation. Yes, it makes Anakin less special but it’s cool that he was chosen by the Force to bring balance despite his nature. It’s both ironic and also compelling to the idea of bad things being used for good for the benefit of everyone.