Certainly all the cultures that were wiped out are not here to object; and those that weren't weren't. But many even of them might have been, after. We have no

Certainly all the cultures that were wiped out are not here to object; and those that weren't weren't. But many even of them might have been, after. We have no record of them, so cannot count them. Those still around to object are subject, necessarily, to survivorship bias, and rather more starkly than is usual.