> Regardless, I didn't mean to imply that the modern transhumanist movement is merely an outgrowth of Russian cosmism. But the cosmist writings may be the earliest articulation of transhumanist values.

When people say "whose influence can still be seen today in the transhumanist movement", it seems reasonable to me to infer that they were indeed implying that if not an offshoot, there is still a lot of causal influence. If it was all a sheer coincidence, then 'influence' is a very odd word to use...