Think about this one too guys, when you are registered with the FAA you are an aircraft. SO now you don't have to register so officially you aren't an "aircraft" so what if John Boy Bob across the street decides to shoot you down with his ole double barrel goose gun. Are you still protected? Has he shot down an Aircraft and can be prosecuted to the fullest extend of the law just as if he had shot and hit a manned aircraft? Or now, did he just shoot down a pesky "toy" that was annoying him and flying over his house without his permission.
Not quite true, my friend. All law agrees, hobby aircraft are aircraft.
You just have to be sure you operate in the hobby aircraft realm, or the FAA has jurisdiction over its operation. Registering changed none of this.
I still plan on telling everyone that I'm registered with the FAA. It HELPS you deal with the myriad of law enforcement and local busybodies.