Has the Canadian government exempted articles about the wildfires from fees? If not, they don't really have any right to complain that Facebook doesn't want to pay to share them. At the end of the day, they're a private company who are looking to make a profit, not an emergency broadcast system.
I love the first order effects. I love the second order effects. I love the weird edge cases.
Then some power hungry sociopath comes into the room and belches "serve me" and vomits a rule onto the ground. It's clear they haven't thought about this any further than simply wanting the masses to bow down to them. Do they even know what rules are?
While I am definitely sympathetic towards anyone who's business model is impacted by Facebook, and I think that the honorable thing for Facebook to do here is take the hit and let sharing of forest fire news, ultimately this is exactly what Canada (a sovereign country ruled by the people) wanted.
This isn't some weird third order emergent property of their rule. They demanded something from Facebook and now they're getting it. If that makes them sad (to get exactly what they asked for) then it's kind of a personal issue.