I think so. Teenagers would have to think twice before practicing cyberbuIlyng. It would not only discourage people, but also serves as a reference of how much authorities and legislators are concerned about this issue. And with the time, these stricter laws with the right focus, the tendency is for cyberbullying to decrease.
As a result, it will attract society´s attention for further discussion of the topic (possibly other solutions).
The creation of more severe laws contributes in the sense that this type of real problem has the punitive aspect as a highlight for the potential cyberbully.