Oh, I know the Pastafari - itâs actually a nice thing, and relatively present here in Germany.
But, similar to the Cult of the invisible pink Unicorn, it is far more of a critique of âtraditionalâ religions, not so much a religion itself. Though I like them both! 
I like the Cthulhu-Cult mainly for its style and influence (I think itâs amazing that it was all born in one manâs mind, but was adapted by so many other writers, game developers, film makers and so on that it became a full-fledged mythology finally). I have a deep dislike for the usual, big religions for various reasons⌠and so, I am very cautious in actually joining a ârealâ church of any kindâŚ
Thing is - most religions have a lot more than that. A set of morals, some sort of genesis, thoughts about what happens after death, some belief on the meaning of life and other relevant stuffâŚ
I think a church of transhumanism, as well as a church of bodmod, can definitely deliver some of that (morals, meaning of life and similar things), but hardly something like the history of creation or thoughts on life after death (or the lack thereof). So I think there is definitely a philosophy of transhumanism (as well as one of bodymods), but not necessarily a religion, because that covers a lot of other things as well. Things I do not like or agree on, but that belong to a âproperâ religion, I think 