tl;dr :
- Hexchat IRC client app development stopped
- Linux Mint team was building IRC client to replace Hexchat
- The team tried Matrix and liked it
- Linux Mint’s communication channels are moving from IRC to Matrix
- The desktop app will be named Matrix to avoid confusion
Because when interacting with other people to do something together it is more convenient not having to encourage them to install something. Like preinstalled Magic Wormhole for file sharing or something for remote desktop. FTP client is a must. Chat is nice to have.
I use Arch btw.