In my experience, consultants and asset owners don't seem to mind our very large active weights so long as the results are good. We fulfill our promise to create the win-win and collect our performance bonuses and cute trophies and the system never shows the slightest signs of being broken.
Active managers are the centerpiece of this design and they bear most (if not all) of the responsibility. In case of failure, I would blame them and no one else.