The Deseret News has an interview with one of the philosophers advising the show.
The Good Place’ had a controversial ending. Here’s what the show’s philosophy adviser had to say about it
I have to say, I was bothered by the ending. While I understand that these people are already dead, the essence of who they are -- Eleanor, Chidi, Tahani, Jason -- has continued from life to after death. In all the eons they spent in The Good Place, they are still, essentially, who they were in life. I must confess that every time I think of the door (even now), I get a jolt of anxiety. It is the end of existence as they have known it. It is final.
Going through the door puts a permanent end to that. It is the door, not death, that is truly the embodiment of Shakespeare's "undiscovered country":
I thought it was a mistake for Jason to pop up after he supposedly went through the door. To me, it didn't show that he had become a monk in reality; it showed that he wasn't ready to make the transition because he had to find the necklace he made for Janet.
And I don't understand how it works -- what if your overwhelming desire was to meet Abraham Lincoln, but hey, Abe grew "content" and passed through the door before you even got there. Does that mean you missed your chance? Did Chidi never get to hear Socrates or Plato lecture in Ancient Greece? He and Eleanor went to the ruins in modern time.
I was also disappointed with how pedestrian The Good Place seemed. If I was there, I'd be making visits to stand on the sands of Mars, paraglide in the winds of Jupiter, watch the suns rise in Alpha Centauri.