This is nothing new. The “virtuous pagans” were always accepted as people who, for one reason or another, could not know or accept God’s revelation of Himself in Jesus. But they adhered to natural law, without perhaps even knowing it, and it is certainly undeniable that doing good and not doing evil is the fundamental principle.
The only religion, unfortunately, that seals its believers off from this is Islam, because it rejects natural law and considers sharia to be the only law of the universe. And under sharia, one is permitted and even ordered to do tremendous evil in order to advance Islam and the cause of the Islamic version of God. And in fact one is permitted to engage in all sorts of behavior that other cultures reject.
That said, there probably are some individual Muslims who are fine and sincerely would like to find the truth and do the right things. To me, this only means that the Church has got to be more forthright in offering the truth so that these people might be able to get out of their oppressive and life-denying cult.
Because Islam is from the devil.
Well said, livius.