GuardLlama

That's an option, the NWS is the United States is good and I suspect other countries have similar organizations.

Dark Sky had no issues charging a fair subscription fee for their app, and it got the acquired by Apple.

XMPP doesn't "work", but on the other hand, the alternatives probably worse:

1. Don't run your own server? A co-worker once operated a fairly popular "public" XMPP server with a decent number of typically active users, a couple hundred. Some eastern European "darkweb" drug sellers had an account on the server, so their competitors thought it worthwhile to threaten the XMPP operator with very directed violence. If you don't host your own, who is running your XMPP server? What will they do when the government/yourThreatActor threatens them?

2. If you do (or don't!) run your own server, how do the end users find a halfway decent application on their fancy iPhone 18 Pro++ that supports push notifications? Their Windows 10 desktop? Ubuntu Linux?

3. If you run your own server, what do you do in the unlikely event of spam?

4. Crypto? OTR sucks for multi-device, OMEMO isn't extensively supported.

XMPP obviously doesn't work, but I can't suggest anything that's better.

I wouldn't worry.

You just did exactly what you needed to do! Post to HN and hope the thread gets enough upvotes to reach the frontpage to find a human at Google.

Meta takeaway, probably:

A popular PetaPixel post that gets coverage on additional social platforms is your only form of recourse against Amazon.