This type of policy is not much different, except for the level of intensity, than in the case where those HEB or Walmart employees get fired for chasing down purse snatchers or shoplifters because the policy says you can't. These policies specifically state what their actions should be, and you run the risk of being fired or sued - and this CNN dufus that has self proclaimed all-knowing "common sense" would probably turn on a dime if a CHLer gets into a newsworthy incident to protect himself or another human being from danger.
Granted, I like to see the brave soul that says 'heck with policy', 'heck with the job' and steps in to do the right thing. I hope I would be one of those, but you never know until it happens to you.