I would say “self-congratulatory” rather than “hipstery” — I’m reading this right now too, and although I find it fascinating (like I find reading about any cryptography fascinating), it often feels impenetrable without a cause to be, other than “aren’t these characters all such geniuses, I bet you can barely keep up.” Also, I get http://en.wikipedia.org/wiki/Bobby_Shaftos_Gone_to_Sea stuck in my head for hours afterwords each time.