Lemmy instances die twice

"They say you die twice. One time when you stop breathing and a second time, a bit later on, when somebody says your name for the last time."

I just realized that Lemmy instances are similar. For example, feddit.ch shut down last month, but some posts live on as they were federated with other instances. The original instance won't be entirely gone until (unless?) every instance that it was ever federated with is also gone.