Futurology

It's an interesting point, but doesn't that imply a science fiction tradition grown from a more benign history would feature totally different technologies?

My natural intuition is that available technologies that could be developed are a pretty rigid consequence of the laws of physics and our current economic situation. Campbell may have been racist, but neither he nor Asimov invented the idea of robotics and AI.

As for TESCREAL, it doesn't seem like a natural group to me. EA says send mosquito nets to Africa. Extropianism says send Elon Musk to Mars instead. There's not much overlap really, except in that they have opinions, and that they have a following in the same industry-subculture.