I am absolutely sure there was a D&I complaint identifying the issue, and the only way they could solve it is by adding guidelines for helping interviewees train better.

Which is wild and kinda highlights the issue, not solves it.

I've worked at a bigtech company and have seen how D&I suffers. "We had a goal to have more non-white employees, so this year 70% of our unpaid interns were from minorities! FTW!"

D&I is always a top management problem. I cannot be fixed from the bottom.