After reading Eliezer's comment and yours, I now think the "30%" figure for "being safety conscious" needs unpacking. In particular I think there's a tendency to picture the most safety conscious of the converts, and say the entire 30% looks like that, even though (for me at least) the intuitions which let 30% be plausible are based on researchers intellectually believing safety consciousness is very important rather than researchers taking actions as if safety consciousness is very important.