Now you’ve asked the question, and opened that “can of worms”!
My short answer, Ra conformed to the free will of The channels.
Don and Carla were against any “negative info”, and so, to at least get some info into our realm, passing through the frequency fence, Ra complied.
Here’s a snippet, for more back story:
[…]”Don Elkins took interest in channeling in 1961, after an acquaintance gave him a book with the
channeled messages of a Detroit
contactee group led by Walt Rogers.
[note 2] Experimenting together with some of his students, and others including Carla L. Rueckert whom he met that way, they eventually got similar 'love and light'-focused channeling going. In 1970, Elkins and Rueckert formed L/L Research – 'love/light', in their own channeled New Age terms – concerned with their overall project, publishing their books,
[3] and outliving both of them. Their 1980s Ra channeling was significantly more original than the rest of their channeled works before, during, and afterwards.”
From The site:
Ra Material