Al shabab is one of the biggest reasons. And people put more effort in their deen, I know my mother told me that they were really strict with memorizing the Quran but not knowing the meaning, you know tafsir and sunnah. So that changed, alxamdulillah! And we should all be putting more effort in the deen.
I understand that you want Somalis to embrace their deen but wearing niqab is not a part of deen. A hijab is enough, we don't need women wearing black bags in the equator.