How is it just a Slack setting? As in if you were to talk in the office and suddenly the other side shouts out loud so everyone on the same floor can hear it th

How is it just a Slack setting? As in if you were to talk in the office and suddenly the other side shouts out loud so everyone on the same floor can hear it that's also just a setting? People start private chats for whatever reason they like but they assume it's private. Until there is an agreement by both sides for it to be public it shouldn't. It shouldn't matter whether that's online (via Slack) or in person (via a private room).