By definition, it means some people were extended offers that would not have absent positive discrimination. Well, I suppose it could be the case that the level of positive discrimination didn't alter the outcomes, but then the affirmative action program achieved literally nothing.

At least, that's with the typical meaning of "affirmative action". It's a nebulous term that some use to encompass things like blind orchestra auditions. In the tech world this could be equated with anonymous resumes and blind zoom interviews with modulated voices. But few tech companies seem to be interested in this type of affirmative action.