1. The Markdown display processor simply doesn't mesh with expectations for chat UX. I know there's FOSS considerations, but the end result is that someone expecting it to work like Discord/Slack/Teams sees the chaotic results and says "fuck this amateur nerd shit"
2. To this day, new users are horribly confused about how to join an encrypted room, even when their hand is held through the entire verification process (via Discord)
3. "Cinny is so nice, why isn't that the official one?"