To be clear, please continue to enjoy your food the way you want it. Just know what the words that exit your mouth mean. Life shouldn't be safe, and many of life's greatest pleasures are not safe.

Is it a Canadian beef problem? Nah, it's just a problem with the definition of "safe food". If the food is not cooked to 165F, then any bacteria, fungi, and parasites that are present could still be alive. There are no guarantees that the beef didn't have tapeworms, and since ground beef is usually from multiple cuts, there's a larger chance that a tapeworm has been ground up and spread throughout. It's a tiny chance, but it's still a chance. Steaks are less of a risk, because it's a single cut, and the chef can visually inspect it.

The waiver is stupid, but it has less to do with capitalism and more to do with the legal system. People sue for anything and everything, and I don't blame companies for trying to defend themselves from that. They asked the dude to sign a waiver, because they're afraid he doesn't understand the risks and might sue if he gets sick.

Funny thing is: in this case the guy didn't understand the risks. He thought they were saying their beef is sketchy. What they were really saying is: all ground beef not cooked to 165F could be sketchy. I think he's dumb, because he doesn't know that a medium cooked burger involves risk but has been requesting it everywhere he goes. If he had known what a medium burger is, he would've just said "yeah yeah yeah", signed, and ate the burger like an adult.

I'm not you pal, buddy. (but we might be friends now)