All most transhumanists want is the pathway open to the use of human-enhancement technologies as they come to the table. All the fluff about assaulting naive singularists and technophiles just seems unnecessary--the major advances they hope for aren't due for 40+ years anyway. Fringe-optimists. Your saying that no "special 'transhumanist' technologies exist" just seems misleading -- we already have technologies that espouse the ideal..organ implantation, stem cell research, cochlear implants, plastic surgery, pre-implantation genetic diagnosis, etc...I reply:
You can't have it both ways. Nobody has to join a Robot Cult to advocate for healthcare, science education, renewable energy investment, or computer/network security. If enhancement is just healthcare then transhumanism is a vacuity, but if enhancement is what transhumanists actually always demonstrably do talk about "it" being when PR flacks aren't desperately trying to sanewash it -- that is to say, if it's all comic book sooper-bodies and holodeck heaven immortal uploads and nano-treasure caves and Robot God singularities ending history -- well, then it is crazytown and people who know it is crazytown will keep on calling you on it. Either way, vacuity or crazytown, face it, transhumanism is something of a fraud.