Yeah, that site is indeed one of the worst offenders. Try a fluid dynamics textbook. I genuinely don't think you understand what I'm saying. Air isn't magic fairy dust that pushes on airfoils from a distance. Pressure is impact.
> Air isn't magic fairy dust that pushes on airfoils from a distance.
No. Like I said, it's a fluid that has pressure and velocity everywhere. At low enough Reynolds numbers, like for model gliders, you can even get away with treating it as a non-compressible fluid with decent results.
> Pressure is impact.
And contact between two objects is really about Pauli exclusion surfaces at the atomic level. So what?