Somalinimo exists, we've a bad luck of civil war.
Somalinimo is the thing that made British and Italian Somalilands make a union, it's the thing that made 99.99% of the Ogadens, 99.99% of the NFD Somalis, 99.99% of Djiboutians vote for a union with Somalia. But their ambition was hindered by an enemy of us all. NFD fought a brutal war against Bantus in Kenya so did the other two.
It's the things that drove us to engage in the 77 war, and that war eventually broke us apart and dismantled out union.
Somalinimo still lives and will remain so, it's people like you who don't know their history that question things like this.
Every country had been through a civil war, Europe perished half of its population in the most inhumane ways through civil war. You just see the peace they're in, it costed them millions of lives. It's a must have experience. Civil war is a stage every nation has to go through, it teaches nations a lesson and strengthens their union.