Long time lurker, first time poster ... I cant believe I am doing this, but here i go ...
I am a "round-earther", to get that out of the way. I try very hard to stay serious, but I am sure the occasional pun or sarcasm will get through.
In conspiracy theories, pseud-science, esoteric, super-natural and the likes the discussions often centers around details, which makes the crazy look less crazy as it means that some assumptions are seemingly accepted and the bigger picture gets out of view. So lets try to look at the bigger picture of falling.
Generally speaking we have three elements ... Speed ... because of Acceleration ... because of a directional Force. That's as generic as it goes ...
In my world that's Gravity -> Acceleration -> Speed.
Its like a car ... Engine -> Acceleration -> Speed.
Now, lets look at the alternatives.
Acceleration model ... fine, you got acceleration, where is the force? What is driving the acceleration ... is God pushing our car? I would be glad if a simple answer could be given, and if that answer explains the difference in observable and measurable acceleration depending on the location on earth, that would be swell too.
Air pressure ... you do know air pressure is not directional, right? If we have a balloon, the pressure goes into all directions. In my world, the reason the atmosphere is pushing down, is Gravity. What's the force that pushes the air down in your world? Is God blowing down on us very hard?
The major league of crazy, denpreassure ... again, where is the direction coming from. So objects push against the air, not the other way around. Why is a bowling ball pushing down, when its surface would push in all directions?
I know, answers will generally try to very quickly pass by the meat of the questions and either go into a magic explanation or just ignore it, but that makes this place so much fun, right?