Have the Nones hit a ceiling?

Someone asked me recently why I stopped writing about religion, and I said there were two reasons: One is that the primary dataset I was following stopped updating; the other is that Ryan Burge is doing such a good job, I felt redundant. His most recent article presents evidence that the Nones have hit a ceiling — that is, that the percentage of people in the U.S. with no religious affiliation, which has consistently increased for several decades, has either leveled off or started to...