It would be well to keep in mind that Substack also has a content moderation problem, as reported in this Techdirt article: https://www.techdirt.com/2023/04/14/substack-ceo-chris-best-doesnt-realize-hes-just-become-the-nazi-bar/

Substack CEO Chris Best was asked point-blank about moderation of racist content, and he basically danced around the issue. And any centralized platform that doesn't do some form of "trust & safety" eventually becomes "the Nazi bar."