First, let's acknowledge that when the actions of some people lead to endangering a human life, it's natural to be angry about it.

Personally, when anger is justified, I feel more comfortable with people who clearly and openly express it.

I find them more reliable, more honest, and usually better people to be around.

By my standards, I'd even consider the style very mild, considering a life is on the line.

I would also consider it normal to be on the receiving end of such language if my own work resulted in such a situation. That would cause me to pause and reflect.

The intensity of feedback is information. If everything is bland, it's harder to know how important something is or not. Logic has a limit because you don't have all the parameters from the other side.

It works the other way around. The overuse of superlatives and day-to-day outrage is equally unproductive.

This is not the case here, IMO.

It's more than alright to be outraged, that's very different than it being alright to wish harm. That shouldn't negate anything else said in the conversation, but it's also just as much of the conversation to call it out.