I don’t have a good answer to this, but I did read a blog post recently which might be relevant. In it, two philosophers summarize their paper which argues against drawing the conclusion that longtermists should hasten extinction rather then preventing it. (The instigation of their paper was this paper by Richard Pettigrew which argued that longtermism should be highly risk-averse. I realize that this is a slightly separate question, but the discussion seems relevant.) Hope this helps!
I don’t have a good answer to this, but I did read a blog post recently which might be relevant. In it, two philosophers summarize their paper which argues against drawing the conclusion that longtermists should hasten extinction rather then preventing it. (The instigation of their paper was this paper by Richard Pettigrew which argued that longtermism should be highly risk-averse. I realize that this is a slightly separate question, but the discussion seems relevant.) Hope this helps!