I think it's much more likely that people revel in seeing someone go down; the article clearly alluded to this sadistic aspect I think. As soon as there is enough critical mass for a public shaming, people will jump on the bandwagon.
What needs to change is that this kind of public shaming on the internet should be looked down upon in the future, just at is now in real life. The first step is for employers not to be so spineless to immediately fire an employee that is talked about.