Your missing the idea of God manifestation that I've said many times. A being can hold God's name if he is doing his work perfectly. It doesn't literally mean that being is God, just the messenger of God. You assume Jesus is Malek Yahweh. I assume nothing and say that Malek Yahweh is simply a messenger of God. Could it refer to Jesus? Sure. Could it refer to an angel? Sure. Sense it isn't 100% clear to which, it cannot be proof of the trinity.