The good place is not about the afterlife

The good place at first seems -- quite at-your-face in an obvious manner -- about death and after life. A bunch of people are dead and go to heaven. SPOILERS AHEAD: they discover it is not in fact heaven but hell and have to work through several situations, in the end actually do end up in heaven, spend multiple eternities in there with people they loved and cared for, respected, throughout their lifetimes on Earth, before heading for 'the door' that ends their existence from all eternity. Forever, and permanently. Aka the final, ultimate complete total death.

But it's not really about death is it?

Because what does 'death' even mean when nothing's changed after life? What happens when, sure, you're put in difficult circumstances, often bizarre with a group of people you don't know and don't want to be with, but all things considered and barring the supernatural, the human condition hasn't really changed? It's just that the 'level' of societies has changed, their lives are different, more well-resourced than the world we live in, they're forced to make changes, but they are human beings, dealing with motivations and machinations of other humans. It's the same old, same old.

It's a metaphor for immigration, quite obviously.

Four individuals from very different social strata from different societies are forced upon a place -- could they possibly be refugees? -- and have to make it work together because their existence depends on it. Then they realize the all-seeing-all-powerful overlord is just as powerless as them in the changed political circumstances -- a coup if I may, and ally themselves with him as counter-revolutionaries. In the end they bring about the promised changes, live loving and comfortable lives thanks to change migration through which they can bring in their old friends and family, and in the end depart the world, all of the world, 'for good'. The only real death in the show is in the last part of the final episode. When those five or six drops meet the ocean of ultimate consciousness eventually.

Also there's prison reform inserted in there, in the last season. Good stuff.