I might have used “identity leftists” since there is very little of liberalism in what the author describes here, but I suppose he wanted to stay consistent with the title of the book he cited at the beginning of the essay.
In any case this is a solid assessment. Read the whole thing.
Here’s an important point:
Identity liberals forget that women have sons and husbands too, and worry that their male loved ones will be stigmatized and punished unfairly in the workplace, just as they worry about their female loved ones. What identity liberalism within corporations has done is embed in the structure of corporate culture a set of prejudices and values that are no more just than the ones they replaced.