Dupe is socializing even if he's all alone and everyone else is dead?

I don't know if this is a bug or is intended, but this miserable little dupe still got the "Socializing" moodlet even if everyone else in the colony is dead. And it keeps on looping again and again instead of the dupe just happily idling and walking around.

So... dupes can socialize with themselves (or something else, like an imaginary friend, ghost or something) when they're really lonely and in desperate need of some company and TLC?