Such a weird and untrue statement. Birth control is allowed in Islam. Maybe they don't trust them because of cases like the one where the CIA ran a fake vaccine program in order to collect DNA to help catch Bin Laden[0]. Or maybe it's because there isn't widespread access to healthcare. Or one of the other factors you are totally ignorant to

0- https://www.newscientist.com/article/2277145-cias-hunt-for-o...