Because no one implements it properly.

I have manually modified the OS on my phone to disable all emergency notifications because of all the amber alert and similar spam.

Emergency alerts should ONLY be used for a national emergency that can impact 10,000+ people, we have public news anchors and shit for a reason and constantly waking people up with either real or fake alerts is beyond infuriating, especially when the government hires wholly inept morons who don’t know how to localize the alerts to the area affected and instead send these alerts to an entire province or state.

I use defense related boards and sites to track anything major in geopolitics and weather sites for anything serious going on in the atmosphere.