If they don't blow the horn they will pass all cars at the light and obstruct traffic in the oncoming lane everyone is in a hurry here !
Of course they do, they have to get in front of you to stop and let someone in or out of their vehicle.
Green Left Turn Arrow Logic:
I think I figured out their reverse logic.
If there is just a normal green light, no Green arrow light, you can go in any direction the associated streets permit.
If there is a Green Arrow also at the intersection, then you can only go in that direction if the arrow is illuminated.