Simon Hoggart makes the outrageous, racist and daft point that "[Obama] does not even sound black".
How does "black" sound? How does "white" sound? Is this just Hoggart saying that Obama does not sound how Hoggart imagines "black" people speak? Or is there something else to this?
Does Hoggart think all "black" people sound the same? Does Hoggart think all "white" people sound the same? Does Hoggart think there's a range of voices that are "black" and a range of voices that are "white"?
Individual people have a voice. That voice is a product of geography, society and education. Even if you could make statements about a group having a common accent, or dialect, is it fair to argue that someone without that accent is outwith the group? I think it's only fair if the sole definition of the group is that it is made up of people who all talk the same way.
Hoggart's statement is muddled and nonsensical and capable of racist interpretation.