Lol they're neither oppressed or mistreated, they're far better well off than ethnic Somalis in the west and very proud of their Asian, non-African roots. They tell you they're Arab, Persian, Portuguese, etc.I used to think like you, but now i get it.
Many Somalis outside of Somalia like to tell them they are not Somali. Made to feel like foreigners and during the war, due to having no major qabil backing were abused as they were an easy target.
You don't mistreat people and then act shocked when they turn their backs. Despite all of this, many cadcads and Barwaanis i've come across are ridiculously proud of being Somali and even then people like @Jimmer will still tell them they are not Somali.