"All Muslims speak Arabic don’t they?’

No. In Iran, they speak Farsi. In Afghanistan, they speak Pashto and Dari. In Turkey, they speak Turkish. In the Balkans, they speak Bosnian. In South Asia, they speak Hindi, Urdu, Punjabi, Bengali and many others. In Indonesia, they speak Bahasa Indonesia. In Somalia, they speak Somali. Do you see my point? Not all Muslims are Arabs.