The connection between AI and rationality could be made stronger.

Indeed, that's been my impression for a little while. I'm unconvinced that AI is the #1 existential risk. The set of problems descending from the fact that known life resides in a single biosphere — ranging from radical climate change, to asteroid collisions, to engineered pathogens — seems to be right up there. I want all AI researchers to be familiar with FAI concerns; but there are more people in the world whose decisions have any effect at all on climate change risks — and maybe even on pathogen research risks! — than on AI risks.

But anyone who wants humanity to solve these problems should want better rationality and better (trans?)humanist ethics.