The provincial laws are generally based on the federal law, which happens a lot in Canada if the feds pass a law. The same thing has happened with the lobbying law and with some of the ethics rules. The provinces essentially copy it.
We see the same loopholes across the country. Some of the provinces have order-making power for the commissioners of the kind the federal commissioner has been offered and given recently, but that has not been enough to stop the denials and delays because, again, there are no penalties for violating the law.
If you park illegally anywhere in Canada, even if you're doing no harm and you're not parked in front of a fire hydrant and it's no bother to anyone, you'll pay a higher fine and receive more of a penalty for that than for a fundamental denial of the public's right to know key information that would reveal government wrongdoing and wastes of billions of dollars. That's a perverse system we have.
Some of the provinces have a public interest override. It's not strong enough, because the commissioners' enforcement powers are not strong enough. There are a few provinces with a few measures that are better than the feds' measures, but overall, the performance is the same because the same loopholes are there. It's the same weak enforcement and lack of penalties for these fundamental violations of key democratic rights.