Or at least treat it as a serious drill.

The article seemed more about situations where it's clear the danger is real. From what I've read elsewhere, staying put has historically been a good option. You're still alive now, so whatever you've been doing has been working, so keep doing it. Ie, nothing. If you do move, not only might you move from your known-safe place into more danger, but the movement itself might attract danger - if the danger is a predator looking for targets. Basically, the 75% who stay put have evolution on their side.

It doesn't necessarily work for modern hazards, which probably aren't predator animals.