This is what happens when someone mistakes a conquest map for religious history.

Early Muslim armies conquered land. Obviously.

But conquered land is not the same thing as converted people.

By this logic, you could point to a Spanish empire map and say Christianity in the Americas was only spread by blood, as if centuries of missions, politics, pressure, marriage, patronage, local adaptation, and belief never happened.

History is messier than a cheap slogan.

Borders can change in a decade.

People usually change over generations.