Remember that a not insignificant number of people from Muslim countries that move to USA/Canada convert to Christianity. It’s still an Abrahamic religion, so it’s not that different. But it fits more in with the wider society and has less strict rules. Add in intermarriage which can often result in a conversion at least on paper.

Good example being a friend of mine’s brother. Parents are Hindu from India. Kids are mostly kind of vaguely Hindu/agnostic. Brother married a Christian and converted.