Mixxx is proud to announce that we do not have a #Discord server.
Our reference material is stored on a wiki (https://github.com/mixxxdj/mixxx/wiki/) and user discussions are hosted on a Discourse forum (https://mixxx.discourse.group/).
We do have a Zulip instance for realtime developer discussions (https://mixxx.zulipchat.com/), but it does not host any material.
No service is completely insulated or safe from #enshittification but some choices carry obviously higher risks.