I can hire all of x gender, x race, x religion, etc. for my 1000 employee work force. You won't legally be able to nail any kind of discrimination on me so long as I take care as to not leave evidence of it.
In this instance, did discrimination occur? Did the law do its job adequately?
Sexual harassment is illegal, yet companies still do sexual harassment training and HR in theory can help protect employees from sexual harassment and take action on harassers (if only to protect the company).
What a ridiculous statement. It is of course the responsibility of people inside company to ensure that it doesn't perpetuate illegal discriminatory activities.
The real question is there any evidence of DEI departments effecting change beyond what was already supplied previously. Anecdotally I haven't seen it, nor have I seen any studies backing it up (please supply those if you know of them). The only thing I have seen come of it is additional training every year which can be basically summed up to "play nice with others".