FYI it seems like somebody (@tdeo ?) already created a Discord server a while ago and there are already 182 people in it: https://discord.gg/jqsPruD
If you care about privacy, as I do, the best option is to not install the app and use the browser with all the privacy-enabling features turned on. It sucks that companies are tracking us but it’s not really different than Slack, or any other website really.