It is the perpetrators' responsibility to get their media productions right, and they remain accountable for monitoring or lack of monitoring of what is out there in their name.
And when a whistleblower (if not within the company, at least Mark is within the industry) blows the whistle, then everyone needs to rally around and support him, even protect him, because we all know what the perpetrators and their henchmen will try to do to the whistleblower. As we can see, this case is no exception.
Keep the focus, and the heat, where it belongs.