Dear Avram,
It’s hard to be specific on this thread. I never heard of this specific label [EO] before. It was all a lead up to the statement in bold and the question. As in, does the OP feel confident about adding a clause (ethics – or whatever they think it means) into something (Judiaism – as it was Divinely given) that will eternally outlast them?
The paragraph is about all religions. Religions are not for one person. They are only for people. So what the people as a group think of their religion tends to make up what their religion consists of. But that is not the religion itself. It is only how they relate to it. It doesn’t go by what people claim they think of their religion. It thrives off of how they perform as a religious group.