According to [1] anti-vaxxers "have flocked to Substack, podcasting platforms and a growing number of right-wing social media networks over the past year after getting kicked off or restricted on Facebook, Twitter and YouTube."
If you're interested in censored material more broadly, you might be interested in the ALA's most challenged books lists [2] which include such classics as "Of Mice and Men" and "Adventures of Huckleberry Finn" along with books as widely loved as "Harry Potter" and "James and the Giant Peach"
According to this Guardian article, the "Center for Countering Digital Hate" (also mentioned in your article) would be happy if Substack hadn't given it the platform:
The idea that Yet Another Generic NGO needs to "counter hate" because someone on the internet thinks the vaccine is not going to stop the pandemic is completely bonkers.
What I want to say is, a lot of the controversy around Substack seems to be that it is not aligned with the Right Side in the Culture War. I think they have some great writers, but they're not the next WikiLeaks or anything.
If you're interested in censored material more broadly, you might be interested in the ALA's most challenged books lists [2] which include such classics as "Of Mice and Men" and "Adventures of Huckleberry Finn" along with books as widely loved as "Harry Potter" and "James and the Giant Peach"
[1] https://www.washingtonpost.com/technology/2022/01/27/substac... [2] https://www.ala.org/advocacy/bbooks/frequentlychallengedbook... https://www.ala.org/advocacy/bbooks/frequentlychallengedbook...