If they represent the country, why does no one pay taxes except xamar ? why doesn't we have a united army ? This is called a de-facto country. Even the IC knows that the FGS is just xamar actually. So you telling me an adminstration with 22,000 foreign soldiers in their only city represents the whole Somalia ? "De-facto" and "De-jure" are two different things.
You are talking about current internal problems, I am talking about external. Worldwide only SFG represents Somalia as it is the recognized government of Somalia. Tax issues is the result of the civil war, Al shabab held areas don't pay taxes to the SFG just like some of the other mamuul goboleeds such problems are temporary and expected. The Somalia government currently controls the airspace of Somalia despite many protests from the Muh mamuul goboleeds.