Your argument consists entirely of an unsupported assumption that a religion that teaches people to do bad things isn't a religion? Which is kind of silly. Where is it written that a religion cannot be evil?
Let's assume a religion that worships Satan, and views all evil deeds as devotional. There have been individuals and perhaps small groups with such beliefs. Is it not a religion?
Your list is also presented from your POV. One I agree with, BTW. But from an Islamist perspective, your list of crimes committed in the name of Islam is not viewed as such. They're viewed as meritorious deeds.
Then let them greet their meritoriuos deeds and leader from the point of my 556 cal., pork encrusted, ammo .
Their god is the moon, muhammed is their profit , 680 years after the existance of my God.
Let them go the way of the "thuggies".
and may all their 72 virgins respond to the name : "Sue-eeee !"