Are you arguing that anti-semitism is somehow inherent to human nature?![]()
I don't think he's arguing that, but hatred of people with different beliefs/customs/ideas is an unfortunately common trend in human nature. Given that the Jews have a reasonably unique religion and culture that tends towards introversion, it seems reasonable that they will still suffer a fair degree of dislike and persecution from other people.
The OTL Romans were certainly none too fond of Jewish culture and religion, but since the Jews voluntarily submitted to Roman rule Rome was willing to tolerate their odd ideas (at least until those ideas led to rebellion). Assuming the temple is still destroyed and the diaspora still occurs there will be small, isolated, spread out Jewish communities that are not going to be treated too well by the larger societies which they will likely refuse to assimilate into.
(And that's post # 1000)