I won't contest that history is not replete with examples of management failing to listen to warnings from their employees, but the leadership model most places employ is effective because history is also replete with management staying the course even when under doubt and achieving some measure of success.
Also, if the consequences to decisions were always attainable a priori, I doubt management would make bad decisions. It's easy to look at Microsoft and say Ballmer dropped the ball on mobile, but then again they still don't have a competitive product to iOS or Android and are doing well. Was Ballmer wrong/right? Is Nadella wrong/right? It was hard to say in 2007 and it's still difficult to say in 2020.
The Audi example is only a good example in that management is listening to a group of employees who are advocating for a position in which the market is already trending (which also happens to have substantial environmental benefits). We wouldn't applaud BP if they opted to do more drilling at the request of their oil rig workers.
For whatever reason, who ever was responsible for putting your manager in place trusts that person; you can appeal to your manager if you think they are making a bad decision or you can appeal to their manager that you think they are ill suited to their position. After that, you've exhausted your options at that company and aren't owed anything further. I would strongly suggest to any job seekers that if having a seat at the table is important to you, assess that when you are interviewing. Find or start a company in which that is the culture.
Now I do have to caveat all this with that I am 30, no kids, and live in decently sized market for tech. I may be more cavalier with my "if you don't like it, then leave" attitude. I find the ombudsman position interesting and was unaware of the history around it and HR. I will have to look into that more, thank you for the knowledge.