150 might be a bit of a stretch but he's high IQ enough to understand he's the phenomenon compared to his black brethren. Hence why he made Yeezus, where he was arguably at the peak of his braggadociousfaggotry.
He is high enough iq to be years culturally ahead in fashion and art and how he speaks in interviews
It doesn't take a lot to distinguish yourself lirically as a rapping groid when your colleagues only speak of designer clothes and fucking hoes. And Ye himself certainly has his fair share of retarded ghetto nigger songs lyrically speaking, like On sight, Father stretch my hands, Famous...
