Anti-Vaccine Advocates, Banned from Some Social Media, Turn to Substack

Shut down by major social media platforms, Joseph Mercola, a leading anti-vaccine advocate whose screeds have been restricted by YouTube and Facebook, has found a new way to spread these debunked claims: on Substack, the subscription-based newsletter platform that is increasingly a hub for controversial and often misleading perspectives about the coronavirus. Substack, which researchers from the nonprofit Center for Countering Digital Hate say makes millions of dollars off anti-vaccine misinformation, defended its tolerance for publishing “writers with whom we strongly disagree.”