[simiones]

But that's just it: this is a misunderstanding of what "equity" means, and it is certainly a misunderstanding of what the author/interviewee meant by it.

The article is strongly about more performance-oriented, meritocratic grading, not less so.

It considers this to be a problem of equity since current grading practices (in the opinion/experience of the author, at least) disadvantage certain students who perform better than others but have other problems (less access to tutors, less time for homework, less preparation before class etc).