Yes, Fabianists promoted the clandestine infiltration and take-over as opposed to the violent take-over espoused by Marx, Lenin, et al.
The Fabianists were not mere common men but of the highest most privileged and powerful classes in England. Many were apostate Christians. Having fallen away from God they embraced spiritism and all that that entails: seances, occult rituals, mind-altering drugs, channeling spirits, and so forth.
Given their practices is it any wonder that the ideas espoused by them and their fellow travelers are so very peculiar? Demonic, in fact. When put into practice they invariably unleash evil.
Interesting. I didn’t know that the Fabian movement also included all that you describe. If you have any good sources for learning more (especially online, no money for book purchases at the moment) I’d appreciate it.
IMO the more gradual is worse than the violent; people are ruined mentally and spiritually and then they welcome their destruction.