I haven't read Revival yet but as someone else mentioned, Pet Semetary. A writer operates within what fulfills the story, a true story isn't beholden to personal views or stereotypes of what is 'best'.
I'm sure as you know as you've read so much of King's work, Pet Semetary doesn't treat death with a form of reverence as many authors or works are entitled to. There aren't any poetic last words or quiet deaths, it's carnal, alive. That's life, in the very essence, and the very reason why it's made horrifying. We never know when death will catch us or how, and given the chance, would we do something horrible to fix what is 'wrong' (IE: Death).
To quote Poppy Z Brite: Death isn't easy. If you place a character upon a pedestal and adjust the story to make it appeal to the complicated, it loses it's depth and any impact it may hold.
I'm sorry to hear about the passing of your father. He sounds like a wonderful man who was well read and imparted on you, a great deal of wisdom. Death is natural and a door we must all walk through one day. I don't know what lies beyond, nobody does, but we'll all be there one day. Just never forget that while a certain reverence of death is natural, there is more happiness to be found in life. Celebrate your time with your father and try not to dwell of the abyss.
Welcome to the SKMB! Sometimes when a personal hero seems to believe something which I don't I decide to speculate in an attempt to reconcile. In this case for instance I decide that sK doesn't believe that the afterlife is necessary anything like Jacobs' vision of it, but consider that it is for the obsessively selfish, who live their lives at the expense of others, some of whom are equally selfish. This hypothesis is possible though only if the narrator's own vision is determined by someone else's. sK doesn't tell us this. Nevertheless, just because the ending exists in this story, it does't necessarily follow that sK actually believes in it, or anything like it.