I don't think that's supported by the evidence. The vehicle for Jewish survival has been a refusal to assimilate to the local culture. Most agree that they were merely assimilated into the culture which conquered them. Over the centuries, there have been many branches in Judaism. Only history shows whether the movements have staying power.
Today there are four major branches and many minor branches.
Branches of Judaism that didn't make it in the long term include Karaism and Ethical Culture. This comment not only doesn't contradict Daniel Berleant's point, it in fact makes his case for him. He did not claim that the Jewish people has become extinct. You present it as something akin to a law of physics, and imply that there's something supernatural about our survival. Modern Chinese are no more different from their ancient forebears than we are from ours.