The action - the fact that a decision was made that resulted in some kind of change to address the problem - matters. What underlies the decision is what's irrelevant.
The customers complained, and the company decided that they will now no longer use a superfluous "ladies and gentlemen" greeting that will make them feel excluded or marginalized. Whether the individual(s) in the company who made that decision did it because they agreed with the complainants morally, or just wanted to appease them so they would go away, or did it purely to head off any potential publicity, doesn't matter - they made the decision anyway, and the result is the same: the complainants got what they wanted, and the problem has, objectively, been solved.