Usually people don't even reply to self-moderated threads as their posts get deleted for no reason. The feature should only be enabled in threads in marketplace or currency exchange or services boards (wherein people advertise their skills) as no point of having self-moderated threads in other boards (they encourage scammers). I feel that except for the three boards I mentioned, the option to create a self-moderated topic should be disabled like it's for Meta. There's no need to censor a discussion and bother about spam replies. Discussions should be open for all (like Reputation, Bitcoin Discussion, B&H boards).