What was the understanding of the dark spirit meddlers when comparing what Allan learned to what Karl has learned?

What Kardec was able to determine was that there was quite a range of reliability, ethical perspectives, and morality reflected in the exchanges and dialogue with those beings in the afterlife accessible through psychic mediums. There was a natural inclination to look on the bright side and hope for the best, and assume there were reasonable constraints and limits on the bad that might happen as a consequence of spirits that could not be seen but seemed to have evil perspectives. Keep in mind that religion was universal and quite strong in almost everyone, whether a churchgoer or not. It has been difficult through the ages for people to even believe in the possibility of evil on a mass scale because it is very difficult to reconcile that with the reality of the divine and how such a thing could even be allowed to grow to such dimensions with God watching. So without a clear consistent channeling of the divine to provide unfiltered truth and wisdom about all that was taking place and why, Kardec was putting together bits and pieces of a mosaic that reflected a kind of mirror image of the lower astral realm, for the most part, and the higher astral plane, the province of the divine realm, was relatively circumspect because a meaningful dialogue was difficult to carry out—first of all, by there being very, very few who could channel high-level beings; and secondly, having such a level of ignorance, were unable to pose a series of penetrating questions to truly unravel the mysteries of all that was taking place from the various observations to understand the dynamics and the mechanisms of spirit phenomena and what that represented in a deeper sense. It is that ability to channel by Karl which has allowed the dissection of the spirit meddler makeup, origin, and quandary, its origins from the fall from grace of Lucifer and his angelic cohort, as mentioned in the Scriptures, and a quite detailed accounting of how that spread throughout the entire Milky Way Galaxy. Particularly when these dark spirits, not able to return to the heavenly realm because of their inner corruption, were cut off energetically from life support and in danger of losing their souls altogether, and became parasites only able to survive by tapping the energy of the living. By inhabiting the energy field of living hosts, not only humans but many races of extraterrestrials, the spirit meddlers corrupted them heavily through a campaign of inner bullying to give them extra energy for their survival and, at the same time, cause corruption, discord, and destruction among the living in their culture. This satisfied the depravity within the spirit meddlers who had grown to hate and fear the light and become loveless and savage in being the spirit equivalent of a functional psychopath. The level of scrutiny Karl has brought brings into clear focus the key and quite important ingredients of what you are dealing with for the first time in history.