The point is that it is possible, not common. Which is incredible that the brain can go so long without oxygen and then fully recover, and that we may someday have the technology to revive people better or more often.

Think if you somehow had a machine that could revive and keep someone's brain alive regardless of how injured the rest of their body was. And if you had a whole hour or more to get to them. Not that it's likely to come around anytime soon, but still.