I think saying "even a small risk of extinction is worth prioritising!" sends the wrong message. It's (usually) aimed at assuring people that they can go on as normal. What should be communicated instead is something like:
No, I'm serious. It's not a small risk, and we lack the emotional freedom to deal with it properly as a society. But this also means that we can make an actual difference by taking it seriously early. We now have a unique opportunity to influence the trajectory of public opinion because people haven't got used to it yet.
Pretty great discussion at the end of the implications of AI becoming more salient among the public!