To be clear, Facebook chooses to block it because they don’t want to compensate Canadians news outlets, not because the act requires blocking, which is common misinformation that has been spread.
It was a crazy foolish law that hurt those news orgs that thought they were the reason Canadians used social media. It reminded everyone their are plenty of ways to get news outside of the mainstream Canadian news cartel. Canadians are not seeking out these news orgs shows what their value really is to the average person
I agree it’s a foolish law, but there’s rampant misinformation being spread about it.
When things are repeated often enough with a certain slant (e.g. "Facebook is ..." rather than "Canadian news companies via the Canadian government are ..."), it affects both people's thinking on an issue and what people less connected to the issue are aware of.