Majority of the moderation are volunteering position, meaning they don't get paid to moderate those sites. Reddit plagued with this issue, there are power mods that moderating 50 or 100 subs. The reason for that because no one else want to moderate the subs since it requires time investment.
Moderation is always and a thorn on their site for many forum/discussion sites. When Elon Musk announced their consideration creating a new social media platform, I always think of how they will manage the moderation part in those platforms? Look at other small social media platform like Truth, Gab, Parler. Common issue with those sites is moderation.
