I thought it was a thinly valid shot at religion, overly right wing people, and that afterlife is bull with a fake happy ending sad, but still middle of the road episode.White bear is the episode I tell people to watch first. I think it sums up the series perfectly.
I don't think San Junipero has a happy ending. At the end of the day, all of those people are dead. And that simulation they live in doesn't replace the sorrow they were dealing with in real life. And I think it's taking a heavy shot at religion. But that's just my 2 cents