I fully agree with you that phenotypic diversity is not the result of admixture. But the "Fulani" cluster in the Tishkoff study is relatively close to the "Cushitic" cluster, and people with ancestry from the Cushitic cluster are closer to Eurasia on the plots than Niger-Kordofanian people are. Even though Tishkoff believes that these clusters are all indigenous to Africa, and part of African genetic diversity. This is why Bandar said that they would have a "pull" towards Eurasia compared to other West Africans, he didn't mean to say that they are West Africans with Eurasian admixture.