The Discords I'm active in are all everyday conversations, like big group chats. Some of them are funny/interesting and occasionally someone gives useful advice, but the vast majority are forgettable.

I think that people should publicly share valuable information (like great conversations or useful advice) and some of their typical conversations (a context summary for outsiders and history). But privacy and ephemeral-ness make people more open. It may be better to have a space for most conversations where they're not expected to be saved, or (because "not expected" in Discord relies on weak evidence and today's norms) guaranteed not to be saved.

My wife and I were recently talking about how we kind of luck boxed into dodging a bullet when we had kids (which was rather late). But it's no wonder so many people had or are having so many issues growing up in a public social media era. It's not only your right, but responsibility, to say, believe, and generally do stupid things as a kid and a young adult. It's an important part of growing up. Nobody should ever have to worry about this period in their life following them around forever.