Im just not sure how this makes anyone safer?
Honestly, it doesn't. I have a LOT of experience in this area. It simply is a tactic akin to the TSA having us remove shoes. It is a dog and pony show meant to inspire confidence among guests and discourage "amateur" would-be attackers. But let's be honest... if someone is dead set on an attack, that person will find a way to carry it out unless the authorities catch it during the planning stages.
I don't mind the policy, when we stay, we're barely in the room anyway. BUT, if we happen to be in a compromised state, I would not appreciate being barged in on.