Elevation was a novella, really more a short story that read like a Christmas story. It's a mug's game to try to figure out an author's intentions but King certainly seems to be more insistent in letting us know that we don't have a lot of time on earth and that we should be nice to each other. You could finish this story in one day. A man discovers that he's losing weight and can't explain why. He also decides to help some new neighbors who don't want his help.
I don't think it's a coincidence that it took him 50 years until his daily Trump bashing on Twitter to write a story like this. Seems very cynical to me.
Especially coming from someone who has written stuff like "he had thick, negroid lips" and various other offensive stereotypical stuff in his older books.
