Dont force deletion. People can drop off TG for many reasons. Theres no need to wipe a possibly thriving enjoyable chat for all its members, just because its orphaned. If people want it gone, they can leave.as long as some want it kept - any thry often may - why not? The history is valid, the friendships are valid, the admin rights may be all thats needed even without an owner, and if there is a problem, people will leave anyway, naturally. Good communities are hard to build. Dont rip them down without a really good reason - and lacking an owner is not a reason. Not really.