Could be part of a new propaganda campaign: muddy the water about the left, so that any leftist law can be called evil and reverted.
“Social help? That’s socialism, and socialists are nazis. Let’s repel that law like any good common sense man would do.” ~Poil lievre (maybe)
The notwithstanding clause show be usable by government bodies exactly once in history.
Bonus point: they would be able to reuse it if they cancel the law that required it the first time around.
Edit: to be honest, it should not exist at all.