No doubt this is true. But, they had better not let it be known. To do so makes them apostate and subject to a fatwah, punishable by death, which any true Muslim should carry out against him if he gets a chance.
A true Muslim will kill the Infidel for Allah if he will not convert, or maybe allow him to enter into slavery and submission. A true Christian will tell the unbeliever the Good News and if he will not convert should go his own way but pray for him.
These are completely different outlooks on the world, on God and on Scripture. One leads to blood, bondage and conquest. The other leads to peace, freedom and reconciliation. Maybe you can tell me which one leads to which?
You obviously haven't read much about any of the MANY pograms of Jews in Christian Europe...where they either converted or were tortured to death. Pretty regular event over there for several centuries.