He's Orthodox Christian [1], but he defends all peaceful religious practice against the attacks from celebrity atheists like Dawkins and Sam Harris. But he also attacks violent religious extremists like Wahabis. I don't know about him being anti-Jewish. That doesn't sound right to me. Can you point to anything?

I also don't know about him attacking Dawkins' math; I don't know of any significant math Dawkins has ever published. You may be referring to Taleb's defence of E.O. Wilson, Nowak et al [2], which was attacked by Dawkins and Steven Pinker, without disproving the math in the paper, which Taleb claims to have verified.

[1] https://twitter.com/nntaleb/status/1177630356327075841

[2] https://www.facebook.com/nntaleb/posts/eo-wilson-nowak-et-al...