I've never seen Matrix discussed outside of HackerNews. In the last five years or so, the reaction to people finding out I still use IRC is either "What is IRC

I've never seen Matrix discussed outside of HackerNews. In the last five years or so, the reaction to people finding out I still use IRC is either "What is IRC?" or "People still use that? Brings me back..." I don't know a single person in any professional context that doesn't have one of Slack, Teams, or Discord installed. I may be overstating how much smaller your pool is, but to say that choosing Discord or Slack doesn't grossly expand your reach is just naive.