Ben Shapiro, whom he defends, is an orthodox Jew. What's interesting is that most of the "intellectual dark web", of which Benjamin is a member, is pro-choice. I think if you were to press Benjamin, he'd also say he's pro-choice (he asserts this, in fact, at about 17:30). This suggests that some of these people can be reached on rationalistic grounds.
A point Benjamin raises is how closely the "Baby Hitler" discussion tracks the moral issues at stake with abortion.