> if the moderators are enforcing "on-topic" questions in an Ask Me Anything Every subreddit has its own moderators, and they set the rules for content in that

> if the moderators are enforcing "on-topic" questions in an Ask Me Anything Every subreddit has its own moderators, and they set the rules for content in that subreddit. Reddit generally never interferes with the content or moderation of a subreddit, unless it gets into illegal or "bad publicity in national media" territory. Elon decided to host the AMA in /r/space, so the space enthusiast moderators there get to decide how to run it. If they decide that they want to see Elon answer space questions, and banning Tesla questions helps with that, then it's their subreddit and their choice.