(Primary author, here.)
This is a good point, and obviously there's a lot of tension between phyggish meme-sharing/codewords and a desire to be more inclusive and not so scary. An earlier draft actually made it an explicit point to talk about the perception of phyg, as I think it's one of the biggest PR issues we have.
The pamphlet was written to try and help people not feel so overwhelmed by coming into a space so loaded down with jargon, but you're right that it perpetuates the problem. I encourage people to copy and edit this, perhaps tailoring it to the level of jargon and the specific goals of your group.
So, I and a few other people are starting a Bayesian Conspiracy chapter at my university (New Mexico Tech). We're trying to put together a short (three page) introductory packet to give to new members. We'd like the packet to introduce people to what rationality is, what it's useful for, and some of the basic techniques. We'd like it to be as readable and palatable as possible, to avoid the intimidation factor of simply pointing people at the Sequences, which are not particularly friendly to a casual reader.
I'm compiling some materials of my own for this purpose, but before I get too excited, I thought I ought to check if any of the other meetups had or knew of something along these lines already created. If not, we'll post our packet on our website for other meetups to use as they see fit.