It's a bit broader than discussing the site, if you accept what they have announced. The subreddit (and twitter feed, etc.) will be "open to all to discuss the

It's a bit broader than discussing the site, if you accept what they have announced. The subreddit (and twitter feed, etc.) will be "open to all to discuss the contents of the website, and more broadly how to make Haskell as welcoming a language, community, and ecosystem as can be managed." That second part implies a wider mandate.