I don't think he's talking about only this one issue. Dropbox had an issue with something of this sort recently [0]. They secretly gave their Mac application root privileges. They may have crossed the line for him here. I should say that I'm not speaking for him but I can see how something like this could have been the last straw for someone.
I personally think that the way a company treats it customers is a good display of how good it's culture is. It's not a good sign that they did this.