it should be passed down if you have one Somali parent, that's pretty common in the world. also if Somalis are still Qabiilist in 50 years oromos should just come in and wipe everyone there out. Somalis aren't worth anything if their political thought is that stunted.
Half Somalis with Somali mothers are more linguistically and culturally Somali than those with Somali fathers. That's an undisputed fact. Mothers hold the key to language, culture and socialisation as mothers tend to be the primary caretakers. Also, when it comes to social gatherings, it's women who tend to arrange them and hold court there. Their children sit at their feet/attend gatherings and know the culture/nuances etc.
That's why I find it audacious that there are people who try to ostracise people who are THIS Somali.
Either way, I know Somali women and sane Somali men, don't care to bully the few Half-Somalis in the world.
Look at Sheekh Maxamed Idriis today, Eritrean father, MJ mother and nobody can tell him he is not Somali.