I took import car culture to mean overseas away from a less homogeneous society to on that is possibly more multicultural. I wouldn't drive through Chinatown or Koreatown with a rising sun flag, since I understand the sign holds very different meanings to them compared to people who think it looks cool and like anime.
What is most fascinating is they created something that respects the independence of each instance to rule themselves as they see fit regardless of whether they approve or disapprove of that instances beliefs and values, so it's protected from even themselves. That alone shows the ideals of having respect for freedom and independence for any instance and that they support the idea of sovereignty for any that want it.
They are against authoritarian rules if going by the lemmy function with the ease with which individuals can leave instances and create new ones. If the concept of lemmy was applied to countries they would be against the idea of any invasions of sovereign countries, and respect each countries desire for independence and retaining their culture. Even the mechanism of defederation is a endorsement of keeping out invaders and they actively use it, and they'd be very vocal against countries that are invading or planning to invade saying it goes against the concept of the right for countries to rule themselves if they truly bought into the concept of what they created.
Lemmy as a tech is down right anti authoritarian with the power given to the people and built in foundation of ensuring the independence of each instance. Very ironic actually that certain historical figures that they worship would be incredibly against such a movement in real life that threatened their one party state and ease with which people could just leave and create their own nations if they disliked the rulers.