"It's possible" because a functional society requires trust in the case of extremity and extreme situations are difficult to adequately plan for, difficult to test, and once set in their ways difficult to change for next time due to significant institutional inertia. (Which, before one starts, is not evil, it is inevitable, and part of management and problem-solving is understanding this.)

You can certainly be concerned about the procedures followed and whether they are wise or followed correctly. And should they be looked at and changed? Probably! Almost certainly! But somehow I doubt that the people who you are low-key castigating for their reaction towards the person breaking that societal trust are forgetting this. Most people are, after all, able to care about more than one thing at once.

But the proximate cause is that broken trust, and that the safety measures have not succeeded does not reduce the magnitude of that broken trust. That breaking of that trust is primarily alarming to people is not a particularly humane reason to adjust one's pince-nez and hrm at them.