But there are other questions one could ask about The Expanse.

Why are the Mormons so prominent in The Expanse?

Everybody asks that.

But why do the folks on The Expanse seem like the ethnic mix found in the US or maybe also Europe?

That's a crowd that looks a lot more like America than, say, Southeast Asia or Africa.

Hell, even the UN crowds look like a bunch of Americans salted with an extra dose of east and south asians.

And yet, not one character ever displays the slightest consciousness of ethnicity or race.

Mormons apart, nobody has loyalties other than to Mars, to the UN, or to the OPA and one or another of its many factions.

Nor are identities perceived or felt otherwise.

And why do so many people admire the Martians for being an entire culture and population united in devotion to a single end, terraforming their planet?

As though somehow entire populations devoting themselves, or more likely being devoted by the powerful among them, to a single goal is just admirable in itself, quite apart from the worth of the goal.

So many people so admire totalitarianism?

And yet it seems many people, reading the books, claim the authors are peddling some sort of libertarian ideology.

Don't see it, myself.