Earlier quoted context omitted.
4. A normal level of risk aversion in one of the most risk averse industries If airlines ignored every threat that was “probably not” a real threat, they’d ignore all of them. It’s better to inconvenience a few thousand passengers than it is to kill a few hundred.
How many threats did actually turn out to be real to date? I couldn't find this being published. But how many threats did happen without any indication (only after the perpetrators tell). I can easily recalled maybe 3-4 incidents. So the issue here is do knowing threats really help?
But also, just because someone is making what could be perceived as a threat doesn’t mean it won’t escalate, which is why threats are taken seriously even if we don’t know whether something is guaranteed to go wrong. You don’t want a crazy person making bomb threats on a flight even if they don’t have a bomb, because they can inflict other issues while trapped in a metal tube at cruising altitude.
https://www.iata.org/en/iata-repository/pressroom/fact-sheet...