You might be right - perhaps I've just missed this. I won't claim to have read every single thing Peretz has written.
But are you sure the 'bad vibes' around Peretz are due solely to his racism? I figured he'd run TNR into the ground, and I knew he was disliked, but I figured it was solely because the audience for left-wing domestic policy + right-wing foreign policy has been steadily evaporating. I suspected most of his audience had picked a 'side' and jumped for The Nation or something like Commentary, depending on their preferences.
In any case, I have to admit I don't see TNR's reason for being post-Peretz. It'll be interesting to see what Hughes does with it.