When you go to the Discussion page, there is a permanent disclaimer on top: “This part of the site is for the discussion of topics not yet ready or not suitable for normal top-level posts” (emphasis mine). That would indicate that at least originally Discussion was meant for lower-quality content.
When you go to the Discussion page, there is a permanent disclaimer on top: “This part of the site is for the discussion of topics not yet ready or not suitable for normal top-level posts” (emphasis mine). That would indicate that at least originally Discussion was meant for lower-quality content.