From what I have seen there is neither a "drop resources and go idle" UI element nor a "drop resources and go idle" hotkey.
Use case: You want to shift your economy, and instead of having to find the nearest drop-off point yourself you can simply go Hotkey -> SHIFT + New Order.
Is there really a good enough reason to enter into personal accusation of being a liar/poorly informed etc.?
Can we please try and keep this discussion on a more sober basis please. Lets not overheat the discussion - there is more important things in life that deserve that level of excitement.
I call this micromanage, feel free to use a mod that can help you play a 'simple' but fun game to you but if you ever incorporate this into a competative match your actual skill is artificial in the end.
I can suggest however for you to hotkey that barracks(Control Group). Hmm... I'll go make an issue and suggest that if you hotkey you should cycle through the buildings in github, makes it easy see without having to manually click the building.
Edit: Made it