It might have been a good study at the time it was researched but with the growing increase of religions and participation in countries all over the world it is not going to stand on its own as it was out of date even before it was published.
One of the biggest increases in individual countries has been the growth of islam.
Islam grew faster (16.2%) than any other major religious group in the decade leading up to 2020, according to Pew Research Center estimates. Muslims continued to be the second-largest religious group in the world after Christians.
And with that growth it sprouts an even faster growth with it embedded in each country. More Pew research indicates another 347 million went into islam since 2020.
https://religionunplugged.com/news/islam-grew-and-christianity-didnt-in-just-a-decade
wy69
I think it helps to understand why European conservatives and European Christians don’t view the world the exact same way as Americans on the right do, even with some commonalities.