Protestantism in the Scandinavian countries has been a very weak faith. Hardly anyone there goes to church. Maybe the fact that Catholics are in a minority makes them more faithful in their Christianity there. That may be part of the reason why he was attracted to the Catholic Church in the first place. The Swedish Lutheran Church embraces modernism above being true to the Gospel of Jesus, IMHO. Obviously he felt a need to take this step toward the Catholic Church.
In the USA, we have a rather significant Catholic population who are still faithful Christians, and ditto for the Evangelicals. Among many of the other Protestant groups, it is rather hit and miss as to how much their faith really influences their lifestyles
Christian faith is in a state of flux, and those who are true believers will eventually be winnowed from the chaff.
It depends on the part of the country. Here in the south Catholics make up a very small percentage. We have a very dedicated active parish.
From what I have seen...most Lutherans here in US are apostate....aside from MOSYN
I saw a large convention of them in NOLA two years ago
Looked like those folks in North Carolina who cry over old growth forests long gone
The theme was diversity diversity diversity
Nauseating
Gray haired makeup less chubby women with Bob cuts and mandala and yellow toenails
Moonbeam teens
Skinny husbands wearing birkies and cardigans
You just know....
BTW...I went to a Catholic funeral in Mobile today...it was well done I thought.