Iirc Amber Alerts ( not the ones notifying Amber Heard’s coming to town ) are issued over Twitter. There were cases of people not being able to check, because now a login is required?
I never used Twitter. Here in Germany it has never gotten so far, that it would be the only place you would get some of the important government announcements that can save lives.
Edit: no hate for Amber Heard from my side. I liked to play this stupid joke in my head, long before The Shitshow happened.