I would like to make a general comment, without arguing one point or the other, that this is not an uncommon provision in legislation of the ombudsman type.
In France the Médiateur de la République has the same provision. That is the ombudsperson of France. Also, the commissioner for public administration in the U.K., the U.K. ombudsman, has the same. Both have those provisions.
It stops landslide complaints, perhaps, for those offices. It stops having to constantly deal with very large numbers of complaints and having to turn people down because their complaints are frivolous, vexatious, or apparently without merit.
I'm not offended by this. There is a solid rationale for it. It is quite commonly practised in these types of offices in other countries. That's just for people's information.