I think the show is intentionally demonstrating the weaknesses of liberal culture. My guess is that the show is working up to the climatic destruction of liberalism.
Robert Kirkman started out in comics anti-religion but largely apolitical, but his liberal colleagues have turned him full-blown leftist. I don’t disagree that what you’re seeing is on display, but I don’t think he realizes it or is doing it to make a point against leftism.