If most Muslims are decent, then explain why these two won’t publicly reveal their identities.
The answer should be self-evident
Because most Muslims are better people than the mad murderous war lord that wrote their diabolical "scripture". But unfortunately, there are a minority who are happy to follow his brutal teachings, and that means death to those who only pretend to be dedicated to jihad and the forced conversion of the entire world.
Let’s put it this way. Do you believe most Germans were basically good and decent people during World War II?
“If most Muslims are decent, then explain why these two won’t publicly reveal their identities.”
Because the percentage that is homicidal maniac is very certain to kill them if they do. Most moslems in the world are essentially hostages to the ones who are murderers.