Maybe not necessarily "socialist" but species that are highly technologically-advanced need to be highly empathetic and good at collective decision-making & conflict resolution, otherwise:
"It’s been suggested that any civilization that survives the invention of atomic weapons and ventures into the stars must have embraced peaceful cooperation, or else it would have destroyed itself."
Yep.
I think successful aliens civilization gotta be anarchist, tbh.
https://www.thenation.com/article/society/aliens-socialism-posadism-ufos/

