Well yes, there are many things that you must consent to as a condition of employment. Nothing new there.

I have no idea what they would push, the point is that certain large institutions may have a legitimate interest in reaching users on the premise from time to time. Airports, stadiums, and theme parks immediately come to mind. Anywhere there's a large gathering of people over a wide area which complicates any emergency response.

Why can't the local PD push out an alert to a particular neighborhood if they deem it useful for whatever reason? As long as they didn't spam me I'd voluntarily subscribe to that. As it currently stands I believe (at least in my state) they would have to escalate to a statewide institution and even then I don't understand the targeting to be particularly fine grained.

On top of all that alerts aren't currently authenticated.