Yes, you are right so many of the borders in the Middle East and Africa were deliberately drawn up by the colonialist powers to include different tribes that were at odds. The old divide and rule principle. For example, there are Kurds in northern Iraq, Turkey, Syria, Iran and I can’t remember if there is one other country. Meanwhile some of the Kurdish elements in Syria are probably thinking about joining the Iraq Kurds, and the Turks are probably pooping bullets.
In Libya, the people of the Nafusa mountains referred to in this story are Berbers who had been forbidden to use their non-Arabic language by Gaddafi. There are Berbers in Tunisia, Algeria, and I think Morroco plus one or two others. I read somewhere that they are communicating more about their issues and culture as a result of all this.
Then there is Nigeria with the Yoruba (Christian?), Housa (Muslim?) and the Ibos who got creamed by the others several decades ago. I could go on but you probably know all this anyway.
Well then, the Kurds and the Berbers might well petition the UN for nationhood status too. If these non-islamist tribes and clans start to assert themselves, could help to stave off the radical islamization of the area.
The U.S. and Europeans failed to foresee these complexities and nuances when imposing the western style of countries and borders. U.S. also failed in its promise to help the Kurds, vintage Gulf War I.
Just some thoughts.....