It is normal for a certain percentage of people to express their dis-satisfaction in anonymous public forums because they fear retribution or indifference if their thoughts are expressed to their management or a "Hotline". Some of this expression is indeed simple whining, some is indeed an interesting look at the company's internal gearing, and some is solid information sharing.
Who knows who looks at this site and what impact it has? No one really knows. In HCSC's case. we can hope someone from the Illinois DOI on occasion checks this site.
For those who question why people come to this site to express their thoughts, perhaps a class in Organizational Behavior could help you understand that?