Not just JTNP, I've never heard of the military being called out to try to find a missing adult hiker anywhere, US or Canada. And why on earth would the FBI be searching for a missing hiker? It's not even a local police issue.
I think the video is disturbing because the news media, in this case Global News out of Canada, deliberately made it that way. They are trying to stir up viewers and keep them glued to the screen, "OMG it's all the fault of those incompetent park officials!"
Rather than make a thoughtful documentary video about how hiking in wild places is definitely at your own risk.