The point is that Northern Africans are not Arabs. Yes,Sa3eadi is a word because the 3 is an accent mark used in Arabic language. In modern times Sa3eadi are a minority of the population,but even people in Lower Egypt know that the Sa3eadi are the original Egyptians. Everybody know this,and most Egyptians up to 1956 recented calling themselves Arabs. It was Nasser that finally convinced Egyptians they were Arabs.

You need a good rundown of history in this region of the world. In 640 AD Egypt was invaded by a group of 20,000 Yemani Arabs that only settled in the northern part of Egypt. Later,during the Fatimid Caliph and Mameluke period some Arabs were let loose into the Egyptian population. These two nomadic groups called the Beni Hilal and Beni Sulyiam settled in modern Middle Egypt mostly around Asyut. So there have been no signigicant alteration of the Egyptians except for some pockets in Cairo and the Delta that already existed prior ro the Arabic invasion.

Also,the Arab Muslims made all their converts become Mawali which means they were forced to become customers of Arabs. Virtual slaves that kissed the Arabs ass just to survive. The same course of events happened in Magreb that happened in Northern Africa.
You still have original Saharan populations in Morocco called the Haratin that have been there since the Neolithic period. You also have desendants of African slaves in Morocco called Gnawa who are famous for their trance like music.

Khdafi is a nomadic bedouin from the Beni Hilal tribe. His people were the main ones who destoyed Byzhatine cities and wrecked havoc on Northern Africa. Most Libyans hate Khdafi,and if I was Libyan I would not trust him either.