Great example of real-world evacuation notifications, not assuming that people are sitting glued in front of their battery-powered portable radio tuned to some AM station waiting for instructions. And even then, like the fires in Lahaina, HI, or Paradise, CA., sometimes police and fire cannot drive down your street, or knock on your door. That's why emergency services rely more on notifications via cell phones because the alert will wake someone up. Depending on how fast the fire travels and the exit paths from an area, many times recently the emergency services don't have a plan to broadcast. Unfortunately at that point, it's everyone for themselves.
And that's the reality of the situation. As some of us have mentioned, the vast majority of the modern public are not radio nerds. They don't even own a portable radio, nor have for years. Emergency services fumbling around trying to activate, let alone remember how to activate an EAS alert with urgent information need to take a back seat to evacuate citizens through more direct means. Where EAS works most effectively is after the event peaks and imminent threats to life have diminished. That's when EAS is most effective with information on where to go for assistance.