Since he supported and continues to support Zero, which is diagnostic of racist views, and that the entire op-ed above expresses racist views, he’s a racist.
Just so we're clear: The following quotation from the above op-ed is, in your mind, racist, correct?
"Take affirmative action, for example. To proclaim that it’s okay to evaluate black and Latino college applicants partly on grades but also on their contribution to “diversity” — while white and Asian students are required to just put up or shut up — is racist."