I'd never heard of this comic. So I guess the TV show Firefly wasn't as original as I'd previously thought
Cowboys in Outer Space is a silly concept, but I'll have to admit it was an innovative idea for fantasy. Its about as silly as The Arabs in Outer Space in the Sci-Fi novel, "Dune".
What always bothered me about most of the Sci-Fi fantasy stories that touched on very little, or absolutely no real science, is portraying large amounts of people or sentient beings and animals, living on desert planets showing nothing but sand and rocks, and not even a sign of vegetation. I always wondered how they can possibly sustain life in those places. Are they worlds on which only carnivores live?
They all eat from each other's populations??? It doesn't make sense that the advanced civilisations could grow enough non-meat food on another planet, and deliver it in Space vehicles to their planet. In most desert planet-based fantasy stories, we don't see the civilised beings tending the domesticated animal herds that are their main food source, and showing how their food source animals are fed with smaller carnivores. And we don't see them hunting animals for food.
I've always liked the Sci-Fi stories that showed decent amounts of vegetation on the planets on which animals and sentient beings live, and their means of survival on planets with no water, and no atmosphere are shown and explained. I have a big problem with those stories that ignore those issues. In real life things happen for reasons and people and animals do things for reasons. A large portion of comic book "futuristic" comic book fantasy stories I've seen are filled with settings and characters doing things that make no sense (situations that couldn't possibly exist the way they are portrayed, and things beings do where there is no motivation to do that) - basically just insane chaos. I can't identify with it at all, it isn't entertaining to me at all, only resulting in my wondering why anyone would enjoy reading it.
I do understand that "It takes all kinds to make The World", and taste is in the eye of the beholder.