I’d tell everyone because presumably it would mean people should strongly update their credence of human extinction in 10 years, e.g. from something like 0.5%-2% to 10%-50%, since the current probability that I die as part of an extinction event in exactly 10 years time (assuming I die then in some event) is approximately 10-50%.
I made this same point a couple months ago—happy to hear more people pointing it out:
Spencer Greenberg:
My answer: