The Good Place - Season 2

I don't think it especially matters if we call the show a sitcom or not.  I'd call it a sitcom because as you said, there's really no better word for the kind of show that this is, and Schur has a long history of involvement in other sitcoms with a similar comedic aesthetic.

As to whether it's critical of religion, I think that your clarification as to the show being critical of religious dogma about the afterlife is far more accurate than the show being critical of religion per se.  And really, I think it's more an exploration of various moral systems, and the strengths and weaknesses of said systems.  And it's just as possible for an atheist to have an unwavering commitment to, say, a utilitarian moral code as it is for a religious person to have a zealous commitment to what sort of conduct will earn one admission to their faith's equivalent of "the good place".  And I feel like your argument kind of implies that a religious person must inherently have a morally simplistic and rigid approach to morality, which is certainly true of some religious people, but not everyone, not even all adherents of faiths which have moral codes of behavior which are in some ways rigid and unjust (like there's plenty Catholics who have no problem with abortion or gay people, for instance).  I don't say this as an attack on atheism (I'm an atheist myself), just that I don't think that the show is critical of religion so much as it is of rigidly dogmatic moral codes.

Part of this is probably more due to the fact that I'm less interested in the show's metaphysical angle, and more interesting in what the show is saying about real world society.  Over the course of this season, I've become more and more convinced that the show is in fact critical of meritocratic societies as inherently unjust.  And I'm kind of hoping that they further go on to argue that the meritocratic afterlife of the show is inherently unjust and cannot simply be fixed through mere cosmetic reforms.  And personally, I think that the nature of the show's critique of meritocracy is more interesting than what it has to say about different faiths' conceptions of the afterlife (which is something that I don't personally think exists to begin with), as we currently live in an inherently meritocratic capitalist society where on some level both conservatives and liberals argue that the prosperous have earned and deserve their wealth while millions of others live below the poverty line, or lack health insurance, or cannot find work, or are homeless, etc., where in order to prove that they deserve welfare benefits poor people are forced to jump through needless frustrating and humiliating hoops, where only the brilliant and the talented are paid much mind in attempting to provide marginalized children the same sort of opportunities as children from families of means, where of the over ten million undocumented people residing in the country, the putative "liberal" reform to the situation is so harshly meritocratic that only those brought to the country as children and who prove themselves "worthy" by having a clean criminal record and attending college or joining the military are legally allowed to provide for themselves, and not have to face the prospect of deportation, just to give a few examples.  So I'm interested in whether the show's end game in regards to an unjust meritocracy is to treat a couple of minor tweaks and reforms as a cure-all, or to argue that said meritocracy is structurally unjust and must be completely replaced.