JIM ACOSTA, THE FORMER CNN anchor known for antagonizing President Donald Trump during his first term, did not know what Substack was two months ago, when he was suddenly on the outs with the network he had called home for nearly two decades. Today, he has more than 280,000 subscribers on the platform.
“I called him after his last sign off from CNN, and it turned out he did not own his own computer for 18 years. CNN owned his computer,” Catherine Valentine, Substack’s head of politics, told Newsweek. “But when he left CNN, he had to turn in his computer. He did not know what Substack was, he just knew that there was this opportunity for independence.”
Acosta’s decision to launch a newsletter on Substack rather than seek another…