Humans have realized this minor crisis of complacency.
When Lu Yuan announced the decision to "return to Different Space," some civilian discussions emerged in various community networks and forums.
"We are currently, and have long been, at the stage of a third-level civilization."
"A single 'Ghost' can kill us all! Therefore, we must head further into the distance to seek opportunities for further development."
"Don't let temporary peace blind you!"
"The essence of the world is chaotic."
Near the high-level relics, it's indeed too comfortable. When the most considered safety issues no longer need to be thought of, coupled with the fact that humans haven't been at war with outside civilizations for several hundred years, a mindset known as 'complacency' always naturally arises.
People who have experienced war, and those who grew up in peacetime, are completely different.