How do you say that with certainty and what do you mean when you say Somali? What is Somali?That's not what I said.
South Cushites lived in Kenya before all of those groups, including Somalis.
E-M293 is not proto-Somali and will never be, it is a South Cushitic lineage.
You got Dirs who are unique but are pretty much held to be the epitome of Somalis and Daroods who were only accepted into the Somali nation because of Dir whether he was an Arab (untrue) or something else. Do you mean only eastern cushites are Somali and what haplogroups would that include?