One rather wonders exactly what sort of "spiritual background noise" the Torah is for Buddhists, practitioners of Shinto, neopagans, etc. The rabbi's hidden assumption that the entire world is on the Judeo-Christian or Musilim axis is disturbing, at the very least.
I don't know who this rabbi is or what he believes. But if he believes that some things are true about God and some things aren't, then naturally he would have to believe that some people are mistaken about God regarding certain things. That doesn't require any assumption that the entire world belongs to an Abrahamic religion. It would just mean he thought they were mistaken.
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