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Inactivity before, during, and after the pandemic would be my guess. As the link within your link says:
"New surveys show Americans' membership in communities of worship has declined sharply in recent years, with less than 50% of the country belonging to a church, synagogue or mosque. . . .
The accelerating trend towards a more secular America represents a fundamental change in the national character, one that will have major ramifications for politics and even social cohesion. A Gallup poll released last week found just 47% of Americans reported belonging to a house of worship, down from 50% in 2018 and 70% as recently as 1999. . . .
The percentage of Americans who do not identify with any religion rose from 8% between 1998 and 2000 to 21% over the past three years, while the percentage of nones who do not belong to a house of worship has risen as well."
source
As I read it, a rise of 21% in "nones" over just three years is catastrophic. How long until the country is left with no Americans whatsoever who identify with any religion?
YIKES!! At worse it could happen within a life time. Not that America would actually be left destitute of believers, but if the trend continues it could be close.
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