As cesspool said, this isn’t really meant to mean outright extinction, but I would expect a(n even more massive than already predicted) population collapse in this scenario. The line was basically talking about the end of human endeavor (which, to be fair, is somewhat intertwined with a population collapse in multiple ways). At a guess, I’d expect people having kids for religious/philosophical/moral reasons to become much rarer in this scenario, but not entirely go away.
As cesspool said, this isn’t really meant to mean outright extinction, but I would expect a(n even more massive than already predicted) population collapse in this scenario. The line was basically talking about the end of human endeavor (which, to be fair, is somewhat intertwined with a population collapse in multiple ways). At a guess, I’d expect people having kids for religious/philosophical/moral reasons to become much rarer in this scenario, but not entirely go away.