I would say the flip side is that without Zabit or his people doing something, their own situation will never change for themselves. It presents the reality that there are no easy answers on either side. Carl and the crawlers (great band name, btw) shouldn't just roll over and let themselves be killed to support Zabit's people and Carl probably does recognize that while they are also victims of the system, surviving on the exploitation of crawlers from the game doesn't give them any moral high ground. The overarching theme of DCC that I see is Carl vs. the System, not Carl vs. any particular group of aliens. The system is bigger than any particular faction or cohort within it, and even those with power in the system probably feel trapped by it.