Junk article.
Pew was originally the Chicago Tribune’s in house polling division. It was founded because independent polling agencies wouldn’t lower their standards to craft the results the paper wanted to portray in print. A veneer of legitimacy as it were.
Eventually they spun it off as a separate company, though it remained Tribune Research for years.
Decades later and with a different name the standards at Pew are as low as when it was founded.
Research from Pew is only useful if it is on paper. Then you can line a birdcage with it.
Agree with Pew or not, the American Chruch is flabby. As the tares remove themselves from the Church, the Church will get stronger.