A few years ago a christian organisation in US did a poll on how aware the christian population was on the church's teachings or something like that. MoBlack (anarchist-communist anime blogger that wrote many Medium articles breaking apart Shield Hero) pointed out that while people generally answered questions regarding sex and abortion 'correctly' (as in they were aware of the church's stance), when it came to things like "are children born innocent" (correct answer: No. All children are born with original sin because Adam and Eve ate the fruit.) only like 30% could match the church's stance.
The conclusion he came to was that the super religious people are not actually super religious. They are just very political about their religion.
Link: https://archive.moblack.xyz/1585278114569019393/