(JTA) — Days after Elon Musk threatened to sue the Anti-Defamation League for billions of dollars and amplified a hashtag spread by white supremacists, the ADL’s CEO, Jonathan Greenblatt, praised Musk’s business acumen but called his behavior “frustrating” and said he was spreading “age-old tropes” around blaming Jews for antisemitism.

“I’ve always tried to treat Elon and everyone at the company with respect and forthright manner and a constructive approach. I would do that again,” Greenblatt told the Jewish Telegraphic Agency. 

“The truth is that he has been, Elon Mu...