The only Semetic people are Tigrayans, not all ( Maybe 70-80%).
If you belong to 2 cultures and races, you end up fighting each other to control the resources.It is easier to be a king and exploit. Thus each tribe tries to take the upper hand to control the political power. The political rivalry between Tigrayans and Amhara as the power struggle between the semetic people of Tigray and the Kush people of Amhara who migrated from West Africa
As the following map shows, Kush are not Aksumites. They are West Africans or from Sudan.
