Okay, but your device literally has to decrypt the message in order to show it to you. It then does other things that are vaguely "content analysis" like genera

Okay, but your device literally has to decrypt the message in order to show it to you. It then does other things that are vaguely "content analysis" like generating link previews and marking up the text to make dates clickable. The iMessage feature is "it looks like someone has sent you a picture of their dick, are you sure you want to see that?" I know adults who'd like to turn that feature on. Could it hypothetically be extended in the future? Sure. But arguing against this feature as-is is about the same as arguing against the feature that lets you search for "dog" in your photos.