Now you are able to add any 3rd party chat you want to your Live Stream if you choose so.
Discord was a neat feature but they are far from free speech and is why we will leave this open for any 3rd party chat instead of just Discord.
If you like using Discord u still can but now you have a option to embed other chats like Telegram, Streamlabs, Streamyard, or any other external web chat you are able to use for live streaming.