I think ottomans were colonisers that controled and rule over othersArabs and pakistanis do not specifically look down on Somalis stop with this victim mindset and inferiority complex.
That aside, the Ummah died after the fall of the Ottoman empire. The rise of nationalism in the islamic world makes these countries hate each other and these people do not feel a duty to help other muslim nations anymore since as a nationalist they see all other nations as competitors.
If the god forsaken Habasha horde comes down from their mountains to Galbeed and Somalia, the Muslim countries will not be there to save us from genocide. Galbeed has been occupied by Christian Ethiopians for about a 100 years but you did not see 1/10 the attention from the Islamic world that Palestine have.
I literally do not know a single person, that isn't east african, who knows about the galbeed issue and the plight of the somalis living under occupation.