As best I can tell, the particular thing we’re questioning whether I have examples of is a section in Part V where I say that leftists are using “we need to fight racism” as an excuse to undermine liberal norms.

I'm not sure, but think Robinson was saying that you didn't provide examples of anyone in academia appealing to the "racism as consequentialism" definition, not this. More precisely, Robinson charges that nobody uses that definition exclusively. He wants a hybrid position where we call people racist if they don't like black people but also call them racist if there are racially disparate consequences of their policy positions, I think.