Graves had some pretty...wacky ideas about ancient religion. The war screwed him up pretty bad, as did his divorce with his first wife. Generally speaking his theories on ancient religion, while very pretty and generally proposed with his quite impressive prose style, are totally ignored by scholars of such things--see what he considered his magnum opus, The White Goddess, which is pure fantasy but which Graves seemed to personally really have believed. Graves' notes and his interpretations of the stories are generally nonsense, and in more than a few cases he alters or interprets what the texts say, which makes his actual text itself a problem for use in study. But it's awfully pretty, and Graves is just such a wonderful writer that it'd be a shame not to appreciate them in their own right