Given that he's pretty disposed to throwing out rhetorical statements, I'd say that's a reasonable hypothesis. I'd be surprised if there was more behind it than simply recognizing that his subjective belief in any religion was 'very, very low', and just picking a number that seemed to fit.
What looks, at the moment, as the most feasible technology that can grant us immortality (e.g., mind uploading, cryonics)?
I posed this question to a fellow transhumanist and he argued that cryonics is the answer, but I failed to grasp his explanation. Besides, I am still struggling to learn the basics of science and transhumanism, so it would be great if you could shed some light on my question.