Ethiopia is not powerful as people think. They just don't have any serious counterweight, a vacuum left behind by Somalia. Their economic growth is underwritten by huge Chinese loans. And despite calming of the waters, ethnic Federalism will continue to trouble Ethiopia and Oromo will continue demand more power, ownership over Addis, introduction of Aafan Oromo as a federal language, etc. Once test or you think test power, you tend to demand more
Obviously, they are better connected to world powers and have a lot of influence over Somali regions but that influence is really fragile. All it will take for Ethiopia to leave Somali affairs alone is to have a government that is SINCERE and enjoys legitimacy through consent by the public.