Submitted for good faith discussion: Substack shouldn’t decide what we read. The reason it caught my attention is that it's co-signed by Edward Snowden and Richard Dawkins, who evidently both have blogs there I never knew about.
I'm not sure how many of the people who decide to comment on these stories actually read up about them first, but I did, such as by actually reading the Atlantic article linked. I would personally feel very uncomfortable about voluntarily sharing a space with someone who unironically writes a post called "Vaccines Are Jew Witchcraftery". However, the Atlantic article also notes:
Experts on extremist communication, such Whitney Phillips, the University of Oregon journalism professor, caution that simply banning hate groups from a platform—even if sometimes necessary from a business standpoint—can end up redounding to the extremists’ benefit by making them seem like victims of an overweening censorship regime. “It feeds into this narrative of liberal censorship of conservatives,” Phillips told me, “even if the views in question are really extreme.”
Structurally this is where a comment would usually have a conclusion to reinforce a position, but I don't personally know what I support doing here.