Humidor humidity is always a difficult topic to figure out. I think its because it involves physics, thermodynamics, math and a ton of variables. The biggest issue is size of the humidor. You have wood boxes, Tupperware, coolers, chests, cabinets, winadors, refrigerators, closets, rooms.... if you have a 150 count wood humidor or small to medium tupperdor I doubt if you need to have air circulated. As the volume of space increases I would think you need to consider some air movement.
If you are at or near max capacity for a large volume humidor you may need a fan to provide some movement of air just to make sure you get some air moving. It doesn’t need to be hurricane force just enough to move air in the space.
You would need to compress the cigars to remove space between loose packed cigars. If cigars are in boxes, humidity will penetrate the wood box and humidity the air and cigars in the Box. If the cigars are in tins, there will need to be humidity inside the tin.