I don't think every single individual message ever needs to be archived. Every text, every email, every post-it, every poke, every emoji, every reaction GIF...
Secondly, GitHub is a developer platform, not a user/enjoyer platform. Issue reports are high-barrier even for devs. People get upset if you’re asking a random question, don’t check for duplicates, etc. Some people even get upset about issues without a PR.
Again, I’m all for good open alternatives but when HN is like “you just configure Gentoo and type 30 commands” we don’t stand a chance to actually win users over, gotta accept reality before we can improve it…