Reddit admins only set some very basic guardrails, typically around things like hate speech. Everything else is controlled by the mods. There are subs that are

Reddit admins only set some very basic guardrails, typically around things like hate speech. Everything else is controlled by the mods. There are subs that are toxic and many that are not. Which you subscribe to is up to you and will determine your experience. The example often used here is /r/AskHistorians.