I have only owned a few phones (didn't go cellular until 2011, and I don't replace 'em often at all), but turning off amber alerts is one of the first things I do while adjusting the phone's settings to my liking. I think the only one I can't turn off is the presidential alerts.
Someone at work mentioned being awakened by an amber alert. I mentioned the option of turning them off, and there was awkward silence. One lady looked at me like I had three heads. I decided not to mention the fact that amber alerts don't really save lives. The cases where they "work" and the kid is found are cases where the abductor is a non-custodial family member and posed to risk to the child's life. https://www.researchgate.net/blog/post/ ... y-worth-it
People feel it's "worth it" to be awakened at four AM for custody dispute abductions. Their choice, I guess.