Spam is a fact of life in email. I don't know anyone who thinks we can eliminate it.
Junk journals, junk articles, and junk conferences have been facts of life in scholarly communication for some time. They existed before AI but AI is aggravating the problem.
Now we can add junk letters to the editor.
https://www.nytimes.com/2025/11/04/science/letters-to-the-editor-ai-chatbots.html