1. The point of the question has nothing to do with "golden rules" the point of the question is to figure out if the rule requiring LoS is really implicit if they need to spend ink clarifying it on cards.
2. A ranged attack is a ranged effect that states in its rules that LoS is required.
3. This thread has devolved into nothing better than a yes no screaming match between angry children. And like angry children it needs a timeout until dad gets home.