Your speak of people making things up is deliciously ironic.
Just so you don't get too fixated on the gas movements, can I remind you that it actually moves non uniformly at different speeds and I different directions.
On planet earth we have a name for this, it is called wind. Humans understand how wind is caused, they don't pretend it is god's breath, they recognise that it can only exist in a pressure differential environment such as the one created by a rotating body being warmed on one side only while the atmosphere travels with different momentum in different locations.
I can't wait to hear the flat earth explanation for the Coriolis effect or the jet streams, let alone the southern polar vortex.