It is the only reason all things of different masses and densities fall through air at the same rate.
No, that is not even a reason at all.
Why should being denser than a medium make it fall?
Why should simply being denser make it fall at the same rate?
Also note this is experimentally not true.
You can fill a balloon with carbon dioxide.
It is denser than the air, but it falls quite slowly through the atmosphere, compared to a steel ball or aluminium ball which while being much denser than the atmosphere, the steel ball is much denser than the aluminium, and they both fall at basically the same rate.
And this can be with all three being the same size so they experience the same air resistance.
They are all of more mass and density than air, which makes them fall at the same rate through it.
This can be confirmed by having objects of different mass and density being dropped into the ocean.
They will not sink down through the water at the same rate.
So they will show your claim is pure BS?
That it is not simply a case of being more dense makes them fall at the same rate?
Great job refuting yourself there.
The change here is due to the upwards buoyant force from gravity, and how significant that is compared to the downwards force acting directly on the object due to gravity.
For air, the upwards buoyant force is negligible for most objects, so they fall at basically the same rate.
e.g. going back to steel vs aluminium vs air and water.
The densities as kg/m^3 are roughly 8000 for steel, 2700 for aluminium, 1000 for water and 1.3 for air.
The downwards force due to gravity is given by the volume of the object, multiplied by g multiplied by the density (i.e. the mass times g). The upwards force due to buoyancy from the pressure gradient caused by gravity is the volume the object multiplied by g multiplied by the density of the fluid (i.e. the mass of the fluid displaced times g).
So for steel and aluminium in air, the buoyant force is ~0.016% and 0.048% of the downwards force due to gravity. So the effect is insignificant and can be ignored for most purposes.
But if you put them in water, you end up with the buoyant force being 12.5% and 37%, so quite significant and cannot be ignored.
And importantly, we can measure this difference on a scale. If the scale is accurate enough, you can even do it in air.
So, no. Our model explains it quite well.
But you directly contradicted yourself, and provided no explanation at all.
[imaginary fiend]
You can keep appealing to magic and your imaginary fiend all you want. It wont make it real, and it wont provide an explanation.
Why would there need to be a force pulling us from air and holding us down on the surface
Because all the evidence shows that you need a force to accelerate an object. No force, no acceleration, no going down.
Additionally, we have made force sensors, and can measure the downwards force acting on an object.
Lots of people even have such devices in their home called scales.
If there isn't a downwards force, what are these sensors measuring?
So we have all the evidence available which says one way or another making it clear that a force is required to accelerate something, and we have devices that can directly measure this force.
And on top of that, we also have the pressure gradient in the atmosphere, which would push everything up unless there was a force to counteract that.
So plenty to conclude there is a downwards force proportional to mass.
We have a coherent explanation which actually works.
You instead have "MAGIC!!!!!"
As well as wilful ignorance including by repeatedly ignoring the pressure gradient, and complaining about not having an experiment only to turn around and flee from an experiment.