I actually think you hit the nail on the head with persecution complex. He likely grew up experiencing antisemitism, I know I did and I'm younger than him. But he became incredibly privileged. Since being persecuted is core to his younger identity, he doubles down on the idea that he is persecuted. I see this frequently with people that are newly rich, they can't accept their new privilege as a shift in their identity, so they double down on an old identity.

It's the same issue with Dave Chappelle, who used to be more conscious of -isms, but is dishonest about any other bigotry but anti-black bigotry since he became ultra wealthy. He needs to focus on anti-blackness over all else because if he doesn't he just becomes another privileged dude in a broken system (in his mind). It's about protecting your self image of a victim after becoming one of the privileged.

Also Seinfeld is a groomer creep.