You're right, an AC is part of another rule. An AC is actually a permanent or temporary clearer definition of that rule. In this case the rule is "somewhere" in part 91.

But let me ask you this, just for entertainment purposes. You're hold an airmen certificate and you are an RC pilot. You are flying your RC airplane at 900' AGL and by accident you fly your RC airplane into a GA aircraft. The GA aircraft was more than 1000' ft from you and any building. You fly your RC airplane into that GA aircraft. Question, do you think you could lose you pilot's license or have some kind of action against it?