It's interesting that you ask that question. I had to address this five years ago. In fact, it turned out that there were impacts, as the same household—not necessarily the same user—received one, two, three, four notices. There was a corresponding impact on, effectively, recidivism. It was deemed at that stage to be useful enough that this Parliament decided to codify it in the last iteration of the act, and that's the iteration that we see today.
On October 16th, 2018. See this statement in context.