I've finally found the source for Tom Dark's quotation of Seth referring to New Agers as "imbecilic personalities" and their gatherings as "psychic sideshows." (Arguably, I would have found it sooner had I looked for it sooner.) The content was included in an unpublished Seth session that the "Reality Change" publication refused to print. (I remember being somehow associated with "Reality Change" in the '90s, and I received some unpublished sessions along with a certificate signed by Robert Butts, for joining the organization.) This session may already be published now in the multi-volume sessions and notes. This earthiness is not uncharacteristic of Seth's unedited talks that are revealed in these non-published sessions; still, I hope it's published eventually, because I can't agree with it more.
The major "paranormal" shows tend to shun Seth scholarship for some reason. I remember only one "Coast" show devoted to Seth. This is probably because Seth scholarship has nothing in common with the New Age or the paranormal, and paranormal investigators somehow intuit this.
I stumbled upon this while trying to find information on Sue Watkins' "25th Anniversary Edition" of "Conversations With Seth." I have the paperback; I'd like the Kindle version. But for some reason, it's been split into two parts. Has material been added to this "deluxe edition" sufficient to warrant the extra cost?