I have my full Skeptical Shields up. Thanks for the concern.
I’ve done the same degree of due-diligence that I give everything online, and could find no “Operation clambake”-esque cites, but my research was not exhaustive. I felt comfortable at least taking a peak.
The format appears to be focused on org-produced and “user produced” content, mostly videos and animations. You are encouraged to interact with them ala carte, or join a small discussion about them with others.
I’ll post again later with the list of authors/books/videos that have been recommended by both the facilitator and the other participants.
I freely admit that, in spite of what didn’t turn up during my due dilligence, that the word “cult” has crossed my mind and passed my lips. But, as I said in my OP, I do not yet have a clear reading as to whether those vibes are coming from some of the other participants, or from the org itself, or both.