umm, no. I use work chats for work, and personal chats for personal. I might accidentally add the wrong colleague to a work chat, or wrong friend to a personal chat, but I’m never going to accidentally add a friend to a work chat because I don’t mix work and personal chats.

For self hosting there is also https://forgejo.org/ which is a fork of https://about.gitea.com/ , the latter of which started to shift to a corporate model.