No, before EPO East Africans were just one geographic region at the top table, behind Europe, Japan, USA, Australasia.
They dominate the top 1000 list because only in East Africa is there a financial advantage to both train full time AND dope to win b and c level road races.
Before EPO, no Kenyan had broken 2:10, only 3 Ethiopians had, and FIVE Japanese had.
There are certainly a few outstanding 5000m talents emerging outside of Africa, with this kid being one of them, even if the 800 might turn out to be his best event.
The glamour is in track, and particularly the 800/1500. There is a financial incentive for East Africans to choose the marathon, but the glory is in track. Kenyans run for money, European kids run for glory. No European kids dreams of being the next Kipchoge, but tens of thousands of Kenyan kids do.