I believe broodbucket was using "equal opportunity" in the sense of "equal opportunity employer", which explicitly means that the employer does not discriminate

I believe broodbucket was using "equal opportunity" in the sense of "equal opportunity employer", which explicitly means that the employer does not discriminate (on protected classes). Affirmative action is would be the employer discriminating to the benefit of disadvantaged groups with the intent proving them equality in a broader sense, but it is still discrimination. Historically, one of the major legal hurdles to affirmative action has been that it is discriminatory.