So a written threat only becomes a crime when someone reads it, even if you never intended for anyone to read it? Is it a crime if I make a threatening statement in a diary and someone breaks into my house and reads the diary?
I suppose since Anthropic's T&Cs allow them to have a person read your chats, that makes it violate the law. Of course, if Anthropic didn't have that in their T&Cs, it wouldn't have been illegal to write.