It's fiction.
No, I get it. It's an interesting idea. It's why Conan Doyle had trouble killing off Holmes. People want these characters, these universes to live on. Laser Beam just is struggling with the concept that this is the "end of Starfleet/Federation".
Maybe it is, maybe it's just a rough patch. Perhaps the season will end with it's reformation or the formation of a bigger and better group.