The case seems
very iffy. I'm not clicking your link due to likely bias, so I have no idea if it includes what is in the CBC article about the case in 2023. Canada isn't exactly the LCD of morality, so they aren't the best target for claiming they'd protect a murderer. After all, they did arrest him, he was extradited to France. France's own case fell apart.
2023 article said:
He was arrested by the RCMP in November 2008 and placed under strict bail conditions until he was extradited to France in 2014. He spent more than three years in prison in France before the case against him collapsed.
He was released in January 2018 after two French judges ruled the evidence against him wasn't strong enough to take to trial. He was never formally charged.
This doesn't mean he isn't guilty, but there seem to be legal issues with the trial.