I believe they will never allow users to delete entire chats like that because it will cause mass panic for users and managers, particularly. You already have users doing dumb shit like deleting files accidentally. And more than that, you’ll have managers getting upset that users may be doing it on purpose like “omg I never saw that message! 😱 “

Deleting your own stuff is easy and okayed because it’s not an easy process and it involves multiple steps.