The concept of PR of course is to make something popular. But I would not say that it is a bad thing. Maybe it is more about the way how to use it. And, of course, who's using it. Even though most of it is to show, or better to say, persuade other people to do something that other people want, or to be someone like other people tell you. But much of the good stuff I found, was because I saw it in ads or SM. In Germany, I was looking for an office to rent. If it wasn't for good PR, I would not find this Büro Stuttgart on the web, and this way, would not rent that beautiful place for myself.
So, what I was trying to say. Everything, that we are having right now in our everyday life - are tools. They are bad only in bad hands. Plus, you also need to filter everything you hear, see, etc.