These folks do not seek another, better religion. Same for a better supertheory. Both of which presume that reality can be "reduced to only one kind of experience and understanding." Polydoxy instead refutes an "absolute context" while also acknowledging "there are no absolutely separated contexts either."
I also appreciate the relation of polydoxy to the co-origination of nirvana and samsara, as I too have spent volumes on the topic. And how this relates to the difference between metaphysical and postmetaphysical Buddhism.