It’s an information blackhole. It sucks everything without any way to find it again. Even the forum and threads options they recently introduced, specifically to address this use case, are severely subpar compared to decades old alternatives.
On top of that, it’s a proprietary walled garden platform. If Discord decides to do anything against the communities for profit seeking there’s nothing, no one could do. Leaving hundreds of software projects without recourse for search, scrape, archive or retrieval in any way for all the knowledge deposited there.