Why Obedience To Other Than Allah Not Regarded As Shirk?
It is more than that. An act of obedience to someone else like parents can be done to please God and parents. Worship has no upper or lower cases, but obedience has. This is a fact. That is why God has asked us to obey God, His messenger, and the people in authority. A ll have their own domains to ask obedience for. However, when obedience to someone else goes against God, we are obligated to refuse.