There's an article from 2022, which states:
The Government Accountability Project announced that Canada's whistleblower protections are among the weakest in the world, tied with Lebanon and Norway. The project was especially critical of the fact that only eight retaliation cases have been heard by the Public Servants Disclosure Protection Tribunal, despite PSDPA having come into force 17 years ago.
There are lots of other quotes about the functionality here.
Why are we viewed as having some of the weakest protections in the world?