You're going to tend to see your own views reflected in the story.
I think the latest tribal storyline exists to give the various peoples that we've encountered a bit of closure and to flesh out their stories. In developing a diverse community of different races who visit the Last Dregs, they can reflect together on things that did give their lives meaning and find a collective strength that they didn't have in isolation. As an example,
By using the Omicrons' technology, you're able to convey the sensory experience of various dishes to the Ea, which is something that they previously didn't realize that they had valued and lost. By collaborating, each civilization becomes stronger than it was previously and finds the means to overcome the individual hurdles that made their civilizations fall.
There's also a ton of lore that comes out of this, especially if you talk to the bartender as you progress through the story.